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Numerical simulation tool for moored marine hydrokinetic turbines
| Title: | Numerical simulation tool for moored marine hydrokinetic turbines. |
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| Name(s): |
Hacker, Basil L., author Ananthakrishnan, Palaniswamy, Thesis advisor VanZwieten, James H., Thesis advisor College of Engineering and Computer Science, Degree grantor Department of Ocean and Mechanical Engineering |
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| Type of Resource: | text | |
| Genre: | Electronic Thesis Or Dissertation | |
| Date Issued: | 2013 | |
| Publisher: | Florida Atlantic University | |
| Physical Form: | application/pdf | |
| Extent: | 78 p. | |
| Language(s): | English | |
| Summary: | The research presented in this thesis utilizes Blade Element Momentum (BEM) theory with a dynamic wake model to customize the OrcaFlex numeric simulation platform in order to allow modeling of moored Ocean Current Turbines (OCTs). This work merges the advanced cable modeling tools available within OrcaFlex with well documented BEM rotor modeling approach creating a combined tool that was not previously available for predicting the performance of moored ocean current turbines. This tool allows ocean current turbine developers to predict and optimize the performance of their devices and mooring systems before deploying these systems at sea. The BEM rotor model was written in C++ to create a back-end tool that is fed continuously updated data on the OCT’s orientation and velocities as the simulation is running. The custom designed code was written specifically so that it could operate within the OrcaFlex environment. An approach for numerically modeling the entire OCT system is presented, which accounts for the additional degree of freedom (rotor rotational velocity) that is not accounted for in the OrcaFlex equations of motion. The properties of the numerically modeled OCT were then set to match those of a previously numerically modeled Southeast National Marine Renewable Energy Center (SNMREC) OCT system and comparisons were made. Evaluated conditions include: uniform axial and off axis currents, as well as axial and off axis wave fields. For comparison purposes these conditions were applied to a geodetically fixed rotor, showing nearly identical results for the steady conditions but varied, in most cases still acceptable accuracy, for the wave environment. Finally, this entire moored OCT system was evaluated in a dynamic environment to help quantify the expected behavioral response of SNMREC’s turbine under uniform current. | |
| Identifier: | FA0004024 (IID) | |
| Note(s): |
Includes bibliography. Thesis (M.S.)--Florida Atlantic University, 2013. |
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| Subject(s): |
Fluid dynamics Hydrodynamics -- Research Marine turbines -- Mathematical models Ocean wave power Structural dynamics |
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| Held by: | Florida Atlantic University Digital Library | |
| Sublocation: | Boca Raton, Fla. | |
| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA0004024 | |
| Use and Reproduction: | Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder. | |
| Use and Reproduction: | http://rightsstatements.org/vocab/InC/1.0/ | |
| Host Institution: | FAU |
