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- Title
- With a Finned-Hat to Lower Head’s Surface Temperature: Let the Cool Head Prevail.
- Creator
- Krupinski, Danielle, Su, Tsung-Chow
- Abstract/Description
-
FAU's Office of Undergraduate Research and Inquiry hosts an annual symposium where students engaged in undergraduate research may present their findings either through a poster presentation or an oral presentation.
- Date Issued
- 2011
- PURL
- http://purl.flvc.org/fau/fd/FA00005439
- Format
- Document (PDF)
- Title
- Water Cone Improvement Project.
- Creator
- Foley, Michael, Zitani, Matthew, Scheigner, Kyle, Ortega, Abel, Fisken, Gordon, Su, Tsung-Chow, College of Engineering and Computer Science
- Abstract/Description
-
Abstract Object of research is to improve a solar desalination device known as the Water Cone that creates potable water using solar energy. The water cone is a polymeric cone that sits overtop a dish of saline water. The water is evaporated by the sun and condenses back onto the surface of the cone creating fresh water. In an attempt to improve the cone’s water production, two different hydrophobic coatings are applied to the inside of two cones, which allow water droplets to flow at a much...
Show moreAbstract Object of research is to improve a solar desalination device known as the Water Cone that creates potable water using solar energy. The water cone is a polymeric cone that sits overtop a dish of saline water. The water is evaporated by the sun and condenses back onto the surface of the cone creating fresh water. In an attempt to improve the cone’s water production, two different hydrophobic coatings are applied to the inside of two cones, which allow water droplets to flow at a much faster rate, collecting water more quickly. Two water cones are coated separately, and are exposed to sunlight for five days. Water collection for the coated portion of the cone is compared to the uncoated portion of the cone. Results after a first trial show that coating A on the water cone impedes water collection whereas coating B appears to increase water collection.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00005188
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)
- Title
- Visualization of salt fingers and double diffusive convection.
- Creator
- Tsai, Christina, Su, Tsung-Chow
- Date Issued
- 2013-04-05
- PURL
- http://purl.flvc.org/fcla/dt/3361217
- Subject Headings
- Ocean mixing, Diffusion, Convection (Meteorology)
- Format
- Document (PDF)
- Title
- Spreading Dynamics of Water Film on a Vibrating Glass.
- Creator
- Kendrick, Brandon, Wilson, Robert, Chau, Jimmy, Su, Tsung-Chow
- Abstract/Description
-
We examine experimentally, the spreading dynamics of a wetting water film on plate glass when subjected to vibrations. Both mechanical and acoustic sources of vibrations are considered. The water is wetted on a simply supported rectangular piece of plate glass. Several glass inclinations are tested, with different exciting frequencies. Furthermore, we add different chemicals on the glass surface. This changes the contact angle of the water droplets. Doing this allows the examination of the...
Show moreWe examine experimentally, the spreading dynamics of a wetting water film on plate glass when subjected to vibrations. Both mechanical and acoustic sources of vibrations are considered. The water is wetted on a simply supported rectangular piece of plate glass. Several glass inclinations are tested, with different exciting frequencies. Furthermore, we add different chemicals on the glass surface. This changes the contact angle of the water droplets. Doing this allows the examination of the effect of adhesion versus cohesion, in regards to the behavior of the water spreading on the plate glass. Our attempt to elucidate the relevant physics is driven by the goal of providing a basis for replacing windshield wipers of future automobiles.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FAU_SR00000041
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)
- Title
- Separation flow around airfoil with upstream disturbance by discrete vortex method.
- Creator
- Li, Feng., Florida Atlantic University, Su, Tsung-Chow, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
The discrete vortex method was applied to the calculation of separation flow past NACA 4412 airfoil: Vortex panel was used to represent the body surface and discrete vortices were used to model the wake. Generally the uniform upstream condition is used in the calculation of separation flow. But actually an airfoil could move in wake of other airfoils or disturbed fluid. In this thesis, discrete vortices were used to model the upstream disturbance to investigate the effect of upstream...
Show moreThe discrete vortex method was applied to the calculation of separation flow past NACA 4412 airfoil: Vortex panel was used to represent the body surface and discrete vortices were used to model the wake. Generally the uniform upstream condition is used in the calculation of separation flow. But actually an airfoil could move in wake of other airfoils or disturbed fluid. In this thesis, discrete vortices were used to model the upstream disturbance to investigate the effect of upstream disturbance to the pressure, lift and drag coefficients around the airfoil. Also the animation of separation flow was made on HP workstation using "Starbase" computer graphic package to study the separation process.
Show less - Date Issued
- 1991
- PURL
- http://purl.flvc.org/fcla/dt/14739
- Subject Headings
- Vortex-motion, Fluid dynamics
- Format
- Document (PDF)
- Title
- Resulting Hydraulic Jump From Oscillatory Forces Acting on a Pipe.
- Creator
- Wehage, Tim, Caracci, Christian, Mechmet, Bryan, Garzon, Julian, Su, Tsung-Chow, College of Engineering and Computer Science
- Abstract/Description
-
Within the framework of ongoing research studying the effects of oscillatory forces on pipe flow, an experiment was conducted to investigate the relationship between the nature of said forces and hydraulic jump resulting from the impact of the exiting flow onto an orthogonal surface. To this end, a reservoir supplying constant head and near-hydrostatic conditions was equipped with an exit fitting in its lower section. A section of PVC tubing extended vertically downward from this exit point...
Show moreWithin the framework of ongoing research studying the effects of oscillatory forces on pipe flow, an experiment was conducted to investigate the relationship between the nature of said forces and hydraulic jump resulting from the impact of the exiting flow onto an orthogonal surface. To this end, a reservoir supplying constant head and near-hydrostatic conditions was equipped with an exit fitting in its lower section. A section of PVC tubing extended vertically downward from this exit point and was straddled by a pair of dynamic loudspeakers placed opposite each other and connected to a receiver's inputs so as to play a signal of specified frequency. The resulting turbulent jet flow was then allowed to drop to a horizontal plate of circular shape. The outer lip of the plate triggered a circular hydraulic jump whose location was found to be directly dependent on the frequency of the forces exciting the flow.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00005217
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)
- Title
- Reduction of urinary tract infections caused by urethral catheter through the implementation of hydrophobic textile coating and other geometrical modifications.
- Creator
- Gare, Aya, Su, Tsung-Chow
- Date Issued
- 2013-04-05
- PURL
- http://purl.flvc.org/fcla/dt/3361082
- Subject Headings
- Catheters, Urinary tract infections, Urinary Catheterization--adverse effects
- Format
- Document (PDF)
- Title
- Preventing Fukushima Nuclear Reactor Meltdown.
- Creator
- Galoci, Michael, Amari, Michael, Su, Tsung-Chow
- Abstract/Description
-
FAU's Office of Undergraduate Research and Inquiry hosts an annual symposium where students engaged in undergraduate research may present their findings either through a poster presentation or an oral presentation.
- Date Issued
- 2011
- PURL
- http://purl.flvc.org/fau/fd/FA00005433
- Format
- Document (PDF)
- Title
- On the Drainage Vortices of Liquid in a Container with Two Outlets.
- Creator
- Stankovic, Radivoje, Su, Tsung-Chow, Florida Atlantic University, Department of Ocean and Mechanical Engineering, College of Engineering and Computer Science
- Abstract/Description
-
When a liquid drains through a hole in a container, a vortex may form between the surface and the drainage hole. An interesting phenomenon occurs in the presence of two drainage holes. Only one vortex forms, while the other hole will mostly drain as sink flow. In addition, the vortex can switch between one hole and the other with regular periodicity. The primary goal of this study is to measure this periodicity under varying conditions (height of water in the container, diameter of the...
Show moreWhen a liquid drains through a hole in a container, a vortex may form between the surface and the drainage hole. An interesting phenomenon occurs in the presence of two drainage holes. Only one vortex forms, while the other hole will mostly drain as sink flow. In addition, the vortex can switch between one hole and the other with regular periodicity. The primary goal of this study is to measure this periodicity under varying conditions (height of water in the container, diameter of the drainage holes, and distance between drainage holes). Additionally, a study concerning the volume flow rates of vortical vs. sink flow out of the drainage holes was conducted. In the case of two drainage holes, when the height of the water was decreased in the container, the diameter of drainage holes decreased, or the distance between drainage holes was increased, the switching period was shown to decrease.
Show less - Date Issued
- 2020
- PURL
- http://purl.flvc.org/fau/fd/FA00013572
- Subject Headings
- Drainage, Vortex-motion
- Format
- Document (PDF)
- Title
- A numerical study of bluff body aerodynamics by vortex method.
- Creator
- He, Fusen., Florida Atlantic University, Su, Tsung-Chow, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
Vortex methods are grid-free; therefore, their use avoids a number of shortcomings of Eulerian, grid-based numerical methods for solving high Reynolds number flow problems. These include such problems as poor resolution and numerical diffusion. In vortex methods, the continuous vorticity field is discretized into a collection of Lagrangian elements, known as vortex elements. Vortex elements are free to move in the flow field which they create. The velocity field induced by these vortex...
Show moreVortex methods are grid-free; therefore, their use avoids a number of shortcomings of Eulerian, grid-based numerical methods for solving high Reynolds number flow problems. These include such problems as poor resolution and numerical diffusion. In vortex methods, the continuous vorticity field is discretized into a collection of Lagrangian elements, known as vortex elements. Vortex elements are free to move in the flow field which they create. The velocity field induced by these vortex elements is a solution to the Navier-Stokes equation, and in principle the method is suitable for high Reynolds number flows. In this dissertation, viscous vortex element methods are studied. Some modifications are developed. Discrete vortex element methods have been used to solve the Navier-Stokes equations in high Reynolds number flows. Globally satisfactory results have been obtained. However, computed pressure fields are often inaccurate due to the significant errors in the surface vorticity distribution. In addition, different ad hoc assumptions are often used in different proposed algorithms. In the present study, improvements are made to better represent the near-wall vorticity when obtaining numerical solutions for the Navier-Stokes equations. In particular, we split the boundary vortex sheet into two parts at each time step. One part remains a vortex sheet lying on the boundary of the solid body, and the other enters into the flow field as a free vortex element with a uniformly distributed vorticity. A set of kinematic relationships are used to determine the two appropriate portions of the split, and the position of the vortex element to be freed at the time of release. Another improvement is to include the nonlinear acceleration terms in the governing equations near the solid boundary when evaluating the surface pressure distribution. The aerodynamic force coefficients can then be obtained by summing up the pressure forces. By comparing the computed surface vorticities, surface pressures and aerodynamics force coefficients with existing numerical/experimental data in the cases of viscous flow around a circular cylinder, an aerofoil, and a bridge deck section, it is shown that the present approach is more accurate in modelling the flow features and force coefficients without making different ad hoc assumptions for different geometries. The computation is efficient. It can be useful in the study of the unsteady fluid flow phenomenon in practical engineering problems.
Show less - Date Issued
- 1998
- PURL
- http://purl.flvc.org/fcla/dt/12574
- Subject Headings
- Vortex-motion, Fluid mechanics, Viscous flow
- Format
- Document (PDF)
- Title
- NOVEL KIRIGAMI-INSPIRED FLEXIBLE ROBOTIC EXTENSION FOR MOBILE PLATFORMS.
- Creator
- Den Ouden, Casey, Su, Tsung-Chow, Ouyang, Bing, Florida Atlantic University, Department of Ocean and Mechanical Engineering, College of Engineering and Computer Science
- Abstract/Description
-
Since 2010, aquaculture practices have produced 70% of global seafood consumption. However, this fast-growing sector of agriculture has yet to see the adoption of advanced technologies to improve farm operations. The Hybrid Aerial Underwater robotiCs System (HAUCS) is an Internet of Things (IoT) framework that aims to bring transformative changes to pond aquaculture. This project focuses on the latest developments in the HAUCS mobile sensing platform and field deployment. A novel rigid...
Show moreSince 2010, aquaculture practices have produced 70% of global seafood consumption. However, this fast-growing sector of agriculture has yet to see the adoption of advanced technologies to improve farm operations. The Hybrid Aerial Underwater robotiCs System (HAUCS) is an Internet of Things (IoT) framework that aims to bring transformative changes to pond aquaculture. This project focuses on the latest developments in the HAUCS mobile sensing platform and field deployment. A novel rigid Kirigami-based robotic extension subsystem was created to expand the functionality of the HAUCS platform. The primary objective of this design was to limit the surface area of an extender arm on the drone during flight operations and minimize the in-flight drag. By utilizing a novel combination of shape memory polymer (SMP) and nitinol to extend and retrieve the sensing arm, the structure was able to conserve energy while operating under varying environmental conditions.
Show less - Date Issued
- 2023
- PURL
- http://purl.flvc.org/fau/fd/FA00014324
- Subject Headings
- Aquaculture, Sensors, Robotics
- Format
- Document (PDF)
- Title
- Nonlinear dynamics of autonomous underwater vehicles in ocean currents.
- Creator
- Li, Bo, Su, Tsung-Chow, Graduate College
- Abstract/Description
-
Ocean is human’s last frontier on Earth with most of its space inaccessible to human and remains largely unexplored. For the protection of our ocean and its sound development, unmanned autonomous underwater vehicle AUV, plays an increasingly important role. However, today’s AUV can’t function in a strong current environment. Propeller-driven AUVs typically move at speeds of up to 1.5-2.0 m/s, and thus strong ocean currents could push AUVs way from the planned paths. And their control surfaces...
Show moreOcean is human’s last frontier on Earth with most of its space inaccessible to human and remains largely unexplored. For the protection of our ocean and its sound development, unmanned autonomous underwater vehicle AUV, plays an increasingly important role. However, today’s AUV can’t function in a strong current environment. Propeller-driven AUVs typically move at speeds of up to 1.5-2.0 m/s, and thus strong ocean currents could push AUVs way from the planned paths. And their control surfaces may not work properly, especially when AUVs are maneuvering. Extra thrusters may be added to improve the maneuverability, yet the endurances of the vehicles will be shortened since extra thrusters consume more power. On the other hand, buoyancy-driven underwater gliders, using internal actuators, are characterized by long endurance. However, gliders typically move at horizontal speeds of about 0.3 m/s, which make gliders unsuitable for the missions in strong ocean currents. In the present research, a hybrid AUV design will be studied which combines the capabilities of both AUVs and underwater gliders. The proposed AUV will be propeller-driven yet the maneuverability of the vehicle in both horizontal and vertical planes will be achieved by using internal actuators instead of control surfaces and extra thrusters. The research will mainly focus on the control strategy of an AUV in a horizontal plane by using internal actuators to exploit the vehicle’s coupling effect of the roll motion on horizontal motions to maneuver AUV in a strong current environment.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00005895
- Format
- Document (PDF)
- Title
- MATHEMATICAL MODELING OF CRAFT DRIFT IN AN OCEAN ENVIRONMENT.
- Creator
- KANG, SIN YOUNG., Florida Atlantic University, Su, Tsung-Chow, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
A mathematical model, which accounts for the essential effects of environmental loads and vehicle characteristics from a fluid dynamics point of view, is developed to forecast the position of a craft drifting on the sea surface. The study is intended to provide a better understanding of the dynamics of drift and thus to provide a reliable model of drift prediction for use in future search and rescue mission. In the mathematical formulation, three degrees of freedom (surge, sway and yaw) of a...
Show moreA mathematical model, which accounts for the essential effects of environmental loads and vehicle characteristics from a fluid dynamics point of view, is developed to forecast the position of a craft drifting on the sea surface. The study is intended to provide a better understanding of the dynamics of drift and thus to provide a reliable model of drift prediction for use in future search and rescue mission. In the mathematical formulation, three degrees of freedom (surge, sway and yaw) of a craft are analyzed, since they play the most significant role in the drift prediction problem. The governing equations of motions are derived from Newton's law of dynamics and the environmental loads considered are the forces and moments exerted by wind, current and waves. The forces are analyzed in terms of drag, lift, and inertial forces. The moments are obtained by summing the contribution from the above forces. For the computation of the wind loads, the wind gradient as well as craft geometry is accounted for. In the current loads, profile, friction and propeller drags are included. The wave forces are computed by the use of wave spectral density. The formulation includes the effects of craft rotation as well as craft translation. A computer algorithm for the mathematical model is implemented to obtain the numerical result in the time domain. The model is verified by comparing its result with field measurements. For this purpose, a field test was carried out. The agreement between the computed and field measured drift path was excellent. The real time prediction capability of the model was ascertained.
Show less - Date Issued
- 1987
- PURL
- http://purl.flvc.org/fcla/dt/11894
- Subject Headings
- Ships--Hydrodynamics--Mathematical models, Ocean waves
- Format
- Document (PDF)
- Title
- Literature Survey and the Conceptual Design of an Unmanned Arctic Ocean Scientific Vessel.
- Creator
- Xu, Wenqiang, Su, Tsung-Chow, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
In this paper, the possibility of using a Small Water-plane Area Twin Hull (SWATH) as an unmanned Arctic scientific research vessel is analyzed. Before carrying out the stability analysis of the SWATH ship, this paper briefly outlines the importance of the Arctic survey, which guides the importance of the new research ship for Arctic scientific exploration. In addition to being used as a long-tern monitoring and data collection platform, it is also used as a recovery mothership for autonomous...
Show moreIn this paper, the possibility of using a Small Water-plane Area Twin Hull (SWATH) as an unmanned Arctic scientific research vessel is analyzed. Before carrying out the stability analysis of the SWATH ship, this paper briefly outlines the importance of the Arctic survey, which guides the importance of the new research ship for Arctic scientific exploration. In addition to being used as a long-tern monitoring and data collection platform, it is also used as a recovery mothership for autonomous equipment such as an AUV. After briefly introducing the basic background of a SWATH, it’s advantages and disadvantages are enumerated and analyzed, and a combination of theoretical and practical tests are used to conduct a brief analysis and summary of the reasons for the appearance of trim by head arising from SWATH navigation. Trim by head occurs when a vessel incline such that its plane of flotation is not coincident with its mean waterline plane. In terms of theory, hydrodynamic equations are used to theoretically deduce the SWATH state of navigation and get the corresponding characteristic equation. Finally, a new type USV be designed conceptionally and be created as a model by Solid-work software. Conceptual design combines the advantages of SWATH and remedy deficiency of its longitudinal stability. The theoretical calculation and analysis of the struts of the conceptual model proves that the oblique struts structure can effectively improves the transverse stability of the model, and with the help of the special slender ellipse structure which is installed on the model’s struts, the righting moment of the model is increased when it’s heeling during a large angle. The hydrodynamic analysis of the conceptual model is carried out by Star- CCM software. The simulation results also prove the effectiveness of stabilizer fins to the longitudinal stability of the conceptual design and reflects the data information of the model in terms of resistance and motion state. At last, we have a general understanding of the performance characteristics of the conceptual model by analysis the feedback data, which provides reliable support for future improvement and optimization.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00013155
- Subject Headings
- Research vessels, Oceanographic research vessels, Automatic control, Design
- Format
- Document (PDF)
- Title
- HYDRODYNAMIC LOADS ON OFFSHORE STRUCTURES DURING SUBSEA BLOWOUTS.
- Creator
- RAJIV, PAKANATI V. S., Florida Atlantic University, Su, Tsung-Chow, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
The plume resulting from a subsea well blowout alters the environmental loading on a floating platform which is directly above the well. Horizontal ocean currents deflect the plume and may create a more severe loading on the structure. During the early stages of a blowout the "starting plume" induces forces of a different magnitude on the structure. A preliminary experimental study, investigating the transient loads induced by starting plumes and the effects of currents on blowout plumes, was...
Show moreThe plume resulting from a subsea well blowout alters the environmental loading on a floating platform which is directly above the well. Horizontal ocean currents deflect the plume and may create a more severe loading on the structure. During the early stages of a blowout the "starting plume" induces forces of a different magnitude on the structure. A preliminary experimental study, investigating the transient loads induced by starting plumes and the effects of currents on blowout plumes, was conducted. The results of the experiments showed that the forces involve significant fluctuations which are quite different from the average values. The normal forces induced by starting plumes were slightly greater. Horizontal currents caused an increase in the moment acting on the structure. This is of considerable importance as moments, when coupled with the situation of flooded decks and compartments, may cause the structure to sink.
Show less - Date Issued
- 1985
- PURL
- http://purl.flvc.org/fcla/dt/14267
- Subject Headings
- Offshore structures--Hydrodynamics--Experiments
- Format
- Document (PDF)
- Title
- Human powered reverse osmosis for providing portable water for developing countries.
- Creator
- Drake, Dustin, Su, Tsung-Chow
- Date Issued
- 2012-04-06
- PURL
- http://purl.flvc.org/fcla/dt/3348818
- Subject Headings
- Drinking water --Health aspects, Water-supply, Reverse osmosis, Manually operable reverse osmosis apparatus, Developing countries, Human powered water purification
- Format
- Document (PDF)
- Title
- Heating, venting and aerosol particles dynamics in a vacuum clean chamber: An analytical investigation.
- Creator
- Li, Jiyue., Florida Atlantic University, Su, Tsung-Chow, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
It is empirically observed and broadly used in the semiconductor manufacturing industry that the clean environment of in-vacuum processing can be enhanced through heating from outside the clean chamber. This paper reports an analytical investigation of this problem and presents the results that confirm the speeding effects of changing the temperature gradient at one end of the clean chamber on venting the aerosol particles from inside the clean chamber. First, a mathematical frame for the...
Show moreIt is empirically observed and broadly used in the semiconductor manufacturing industry that the clean environment of in-vacuum processing can be enhanced through heating from outside the clean chamber. This paper reports an analytical investigation of this problem and presents the results that confirm the speeding effects of changing the temperature gradient at one end of the clean chamber on venting the aerosol particles from inside the clean chamber. First, a mathematical frame for the basic problem is formulated and then various analytical techniques are employed to reduce a set of coupled nonlinear partial differential equations to linear equations, and finally, numerical results are obtained from explicit, analytical formulas.
Show less - Date Issued
- 1989
- PURL
- http://purl.flvc.org/fcla/dt/14524
- Subject Headings
- Clean rooms--Heating and ventilation
- Format
- Document (PDF)
- Title
- Formation of Water Rings Around a Rotating Centroid in Oil.
- Creator
- Ferouz, Amir, Gill, Richard, Nasi, Norbert, Pipitone, Anthony, Su, Tsung-Chow, College of Engineering and Computer Science
- Abstract/Description
-
In a tank filled with water at the bottom and oil floating on top, a straight rod reaching into the oil is set to rotate. The rotating rod is brought just above the oil/water boundary and is set to rotate at a speed greater than 200 revolutions per minute. It became evident that the rod’s rotation caused the oil/water interface to curve upward around the center of rotation, reaching up to the bottom of the rotating rod. Visible rings of water formed around the rod, starting at the bottom (at...
Show moreIn a tank filled with water at the bottom and oil floating on top, a straight rod reaching into the oil is set to rotate. The rotating rod is brought just above the oil/water boundary and is set to rotate at a speed greater than 200 revolutions per minute. It became evident that the rod’s rotation caused the oil/water interface to curve upward around the center of rotation, reaching up to the bottom of the rotating rod. Visible rings of water formed around the rod, starting at the bottom (at the oil/water interface) and ascending the rod, one by one. The water rings remained separate and ascended the rod until they eventually dispersed into the oil. Such quantization of water into rings has never been reported on before and represents a novel area of investigation in fluid dynamics. This study aims at obtaining quality photographic evidence to explain this phenomenon.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00005186
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)
- Title
- Fluid Structure Interaction and Morphing Ocean Structure Deployment.
- Creator
- Li, Yanjun, Su, Tsung-Chow, Graduate College
- Abstract/Description
-
As human explore deeper into ocean, more and more subsea structures need to be installed. Deployable structures, a folded package which could be drop from surface and at destination morphing into its final structure form have significant advantages like its counterpart in space structures. More recently, many space missions have proposed large inflatable structure for different proposes. In lieu of the difference between outer space and underwater environment, it is necessary to include the...
Show moreAs human explore deeper into ocean, more and more subsea structures need to be installed. Deployable structures, a folded package which could be drop from surface and at destination morphing into its final structure form have significant advantages like its counterpart in space structures. More recently, many space missions have proposed large inflatable structure for different proposes. In lieu of the difference between outer space and underwater environment, it is necessary to include the fluid structure interaction in underwater deployable inflatable structures application to study the effect of dense liquid environment on the inflating dynamics of ocean structures. The purpose for the present research is to demonstrate, through a numerical simulation and a small scale water tank test, a Deployable Structure for Intervention on Oil Seeps DISIOS, which could form an underwater dome and collect lower density chemicals from oil seep. DISIOS prototype are formed by membranes and inflatable tubes, where tubes act as framework to support the membranes to construct a dome. The study begin with simulate water injection into flatted structures to verify the ability of LS-Dyna software. Deflection and velocity of membranes are recorded to compare with experiment data. Then we turned to inflate process of folded structure by different folded methods. From unfolding process simulation, we could determine which type of fold method works best for our predesign shape of tube. We are now conducting the dynamic analysis of inflatable tube, which is the elementary component of DISIOS framework.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00005896
- Format
- Document (PDF)
- Title
- First Arctic Under-ice Ocean Walking Laboratory (FAU OWL).
- Creator
- Prescod, Hanifah, Su, Tsung-Chow
- Abstract/Description
-
This study is to design an autonomous underwater robotic laboratory for different missions within the Arctic environment. Missions involve locating natural resources such as oil deposits, determining if the area is a feasible location for deployment of sea and air systems for many operations, and to obtain water and mineral samples to study and monitor the changing Arctic environment. Thus far, we demonstrated the feasibility of an autonomous walking robot that can be used to explore the...
Show moreThis study is to design an autonomous underwater robotic laboratory for different missions within the Arctic environment. Missions involve locating natural resources such as oil deposits, determining if the area is a feasible location for deployment of sea and air systems for many operations, and to obtain water and mineral samples to study and monitor the changing Arctic environment. Thus far, we demonstrated the feasibility of an autonomous walking robot that can be used to explore the Arctic by walking under a sheet of ice. A key component of this is that by controlling the robot’s buoyancy the robot will be capable of walking upside down under a wooden plank. We water proofed a commercially available model robot and carried out the experiment in the Hydrodynamics Laboratory. The preliminary investigation contributes to an internal proposal submitted to I-Sense Internal Fund Program.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FAU_SR00000048
- Subject Headings
- College students --Research --United States.
- Format
- Document (PDF)