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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.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005896
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.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005895
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: 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: Better Catheter Design with Improved Liquid Flow through Tubes.
Creator: Ta, Tan, 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/FA00005451
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: 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: 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: 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.
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Date Issued: 2018
PURL: http://purl.flvc.org/fau/fd/FAU_SR00000048
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Engineering a Self-Sustained Coral Reef Park with Renewable Energy.
Creator: Quiray, Paulane C., Mohamed, Antonio, Raja, Umar, 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/FA00005446
Format: Document (PDF)

Title: Electrochemical Process of Biorock for Carbon Dioxide Capture.
Creator: Harris, Alyssa, Freudenberg, Andrew, Lopez, Michael, Muslera, Pedro, Su, Tsung-Chow
Abstract/Description: The purpose of this study is to utilize information and data gathered from previous studies pertaining to the BioRock® method, patented by Dr. W. Hibertz and T.J. Goreau in 1974. Biorock® stimulates the growth of coral reefs utilizing natural reef processes and electrochemistry to remove CO2 from the atmosphere. Our aim is to make the process more efficient to achieve large scale atmospheric carbon dioxide sequestration. A pH sensor in the water and CO2 sensor is in place to quantify and...
Show moreThe purpose of this study is to utilize information and data gathered from previous studies pertaining to the BioRock® method, patented by Dr. W. Hibertz and T.J. Goreau in 1974. Biorock® stimulates the growth of coral reefs utilizing natural reef processes and electrochemistry to remove CO2 from the atmosphere. Our aim is to make the process more efficient to achieve large scale atmospheric carbon dioxide sequestration. A pH sensor in the water and CO2 sensor is in place to quantify and confirm the reduction of CO2 in the water and air above, all within a sealed tank. The first experiment in this study used an iron mesh with an electric current running through it to collect the limestone that serves as the base for a reef. However, the iron oxidized instead of collecting limestone. Future testing will utilize a lead plate as it is less susceptible to rusting.
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Date Issued: 2014
PURL: http://purl.flvc.org/fau/fd/FA0005021
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Development of a Cooling Wristband with Embedded Temperature Monitor.
Creator: Mandelare, Lyndsey, Su, Tsung-Chow, Office of Undergraduate Research and Inquiry
Abstract/Description: Previous studies have shown that the human body is responsive to rapid temperature changes, particularly in the forearm region, when determining comfortable temperatures. The goal of this study is to design a wristband that can passively cool the user through a finned design and to test its effectiveness. To this end, an aluminum finned wristband has been designed and the Adafruit Flora wearable microcontroller was used to monitor the temperature and output the data via Bluetooth. An Android...
Show morePrevious studies have shown that the human body is responsive to rapid temperature changes, particularly in the forearm region, when determining comfortable temperatures. The goal of this study is to design a wristband that can passively cool the user through a finned design and to test its effectiveness. To this end, an aluminum finned wristband has been designed and the Adafruit Flora wearable microcontroller was used to monitor the temperature and output the data via Bluetooth. An Android application was then created to read the data output and save it as a text file that could be output elsewhere. This project will be tested by recording the temperature data as test subjects engage in physical exercise to see if the wristband can continuously cool the user.
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Date Issued: 2017
PURL: http://purl.flvc.org/fau/fd/FA00005627
Subject Headings: College students --Research --United States.
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.
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Date Issued: 2018
PURL: http://purl.flvc.org/fau/fd/FAU_SR00000041
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Effects of external disturbance on the flow development near the boundary of a work table.
Creator: Auche, Edouard Bernard., Florida Atlantic University, Su, Tsung-Chow
Abstract/Description: This thesis addresses the issue of flow development near the boundary of a work table within a clean room. The flow is subjected to periodic external disturbance, either through the pulsation of a source of mass at fixed location, or a moving vortex. The global system consists of a flat table in a parallel oncoming laminar flow. The source of the disturbance is located in the vicinity of the boundary layer. The strength of disturbance is limited in order to apply the quasi-steady boundary...
Show moreThis thesis addresses the issue of flow development near the boundary of a work table within a clean room. The flow is subjected to periodic external disturbance, either through the pulsation of a source of mass at fixed location, or a moving vortex. The global system consists of a flat table in a parallel oncoming laminar flow. The source of the disturbance is located in the vicinity of the boundary layer. The strength of disturbance is limited in order to apply the quasi-steady boundary layer theory. Based on a quasi-steady assumption, a Thwaytes type integration was performed in order to evaluate the displacement thickness and the shear stress on the wall. A parametric study based upon the change of the pulsation, the location and the strength of the disturbance was included in the study. Thwaytes's deviation applied to unsteady cases proved to be successful, and worth being used in further developments.
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Date Issued: 1988
PURL: http://purl.flvc.org/fcla/dt/14461
Subject Headings: Boundary layer, Fluid dynamics
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.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005186
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Carbon dioxide capture by engineering a self-sustained coral reef park with renewable energy.
Creator: Quiray, Paulane C., Raja, Umar, Athey, David, Savage, Tabatha, Suzuki, Hiroko, Egeland, Matthew, Su, Tsung-Chow
Date Issued: 2012-04-06
PURL: http://purl.flvc.org/fcla/dt/3349042
Subject Headings: Carbon Dioxide, Renewable Energy, Self-sustained coral reef park, Bio-diversity
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.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005188
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Comparison of the Rotational Behavior of Coffee Creamer in Two Different Liquid Media.
Creator: Lindstedt, Erik, Sandoval, Sarel, Gavalas, Sebastian, Nguyen, Kevin, Balark, Kamanie, Su, Tsung-Chow, College of Engineering and Computer Science
Abstract/Description: The purpose of this research was to explore dispersion patterns of coffee creamer when exposed to rotating fresh water. The dispersion patterns of the creamer were observed after being both added directly to the rotating water and when having to first traverse a layer of vegetable oil. A rotating platform supporting a beaker was controlled through a power supply. The power supply was adjusted and the dispersion patterns of the creamer were observed at 2, 4, and 6 volts. When added directly,...
Show moreThe purpose of this research was to explore dispersion patterns of coffee creamer when exposed to rotating fresh water. The dispersion patterns of the creamer were observed after being both added directly to the rotating water and when having to first traverse a layer of vegetable oil. A rotating platform supporting a beaker was controlled through a power supply. The power supply was adjusted and the dispersion patterns of the creamer were observed at 2, 4, and 6 volts. When added directly, at 2 and 6 volts, the coffee creamer displayed a pattern of swirling around the vertical axis with some dispersion radially towards the bottom of the beaker. At 4 volts bands were formed, which was likely the result of experimenter error. After the vegetable oil was added, the coffee creamer again displayed as swirls after crossing the oil but was not as distinct as when applied directly.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005200
Subject Headings: College students --Research --United States.
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.
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Date Issued: 2015
PURL: http://purl.flvc.org/fau/fd/FA00005217
Subject Headings: College students --Research --United States.
Format: Document (PDF)

Title: Dynamics and Control of Autonomous Underwater Vehicles with Internal Actuators.
Creator: Li, Bo, Su, Tsung-Chow, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
Abstract/Description: This dissertation concerns the dynamics and control of an autonomous underwater vehicle (AUV) which uses internal actuators to stabilize its horizontalplane motion. The demand for high-performance AUVs are growing in the field of ocean engineering due to increasing activities in ocean exploration and research. New generations of AUVs are expected to operate in harsh and complex ocean environments. We propose a hybrid design of an underwater vehicle which uses internal actuators instead of...
Show moreThis dissertation concerns the dynamics and control of an autonomous underwater vehicle (AUV) which uses internal actuators to stabilize its horizontalplane motion. The demand for high-performance AUVs are growing in the field of ocean engineering due to increasing activities in ocean exploration and research. New generations of AUVs are expected to operate in harsh and complex ocean environments. We propose a hybrid design of an underwater vehicle which uses internal actuators instead of control surfaces to steer. When operating at low speeds or in relatively strong ocean currents, the performances of control surfaces will degrade. Internal actuators work independent of the relative ows, thus improving the maneuvering performance of the vehicle. We develop the mathematical model which describes the motion of an underwater vehicle in ocean currents from first principles. The equations of motion of a body-fluid dynamical system in an ideal fluid are derived using both Newton-Euler and Lagrangian formulations. The viscous effects of a real fluid are considered separately. We use a REMUS 100 AUV as the research model, and conduct CFD simulations to compute the viscous hydrodynamic coe cients with ANSYS Fluent. The simulation results show that the horizontal-plane motion of the vehicle is inherently unstable. The yaw moment exerted by the relative flow is destabilizing. The open-loop stabilities of the horizontal-plane motion of the vehicle in both ideal and real fluid are analyzed. In particular, the effects of a roll torque and a moving mass on the horizontal-plane motion are studied. The results illustrate that both the position and number of equilibrium points of the dynamical system are prone to the magnitude of the roll torque and the lateral position of the moving mass. We propose the design of using an internal moving mass to stabilize the horizontal-plane motion of the REMUS 100 AUV. A linear quadratic regulator (LQR) is designed to take advantage of both the linear momentum and lateral position of the internal moving mass to stabilize the heading angle of the vehicle. Alternatively, we introduce a tunnel thruster to the design, and use backstepping and Lyapunov redesign techniques to derive a nonlinear feedback control law to achieve autopilot. The coupling e ects between the closed-loop horizontal-plane and vertical-plane motions are also analyzed.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004738, http://purl.flvc.org/fau/fd/FA00004738
Subject Headings: Dynamics., Remote submersibles--Design and construction., Ocean engineering., Fluid dynamics., Nonlinear control theory., Differentiable dynamical systems.
Format: Document (PDF)

FAU Theses and Dissertations (18)	+ -
FAU Undergraduate Student Research (16)	+ -
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College students --Research --United States. (8)	+ -
Vortex-motion (4)	+ -
Fluid dynamics (3)	+ -
Hydrodynamics (2)	+ -
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Adaptive control systems. (1)	+ -
Air-supported structures--Design and construction. (1)	+ -
Aquaculture (1)	+ -
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Department of Ocean and Mechanical Engineering (17)	+ -
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