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dc.contributor.advisorHamn-Ching, Chen
dc.creatorChizhuthanickel Sunny, Richards
dc.date.accessioned2016-09-22T19:50:32Z
dc.date.available2016-09-22T19:50:32Z
dc.date.created2016-08
dc.date.issued2016-08-05
dc.date.submittedAugust 2016
dc.identifier.urihttp://hdl.handle.net/1969.1/158083
dc.description.abstractThe major objective of this research was to suggest a water turbine design with higher power efficiency by conducting a parametric study of hydrofoil shapes, modified hydrofoil shapes with circular void, tip speed ratio, pitch angle and solidity. The other objectives of this research included answering the question of whether the efficiency of a chosen Gorlov turbine design can be increased by including circular void in the hydrofoil sections and studying the variation in lift and drag forces on hydrofoil sections with different circular voids in a steady state. The design was intended for a specific case of Gulf Stream ocean currents. Research was carried out using a series of 75 computational fluid dynamic (CFD) 2D simulations which consists of 67 rotating turbine simulations (RTS) and 8 steady state simulations (SSS) using the commercial CFD software, STAR-CCM+. Through this research, the power efficiency of the base case turbine was improved from 31.5% to 49.92% according to the simulation results. Results of this research showed that it is possible to increase the power efficiency of the turbine using the modified hydrofoils with voids.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.subjectGorlov Turbine
dc.subjectGulf Stream Ocean Currents
dc.subjectHydrofoils
dc.subjectPower Efficiency
dc.subjectCavity
dc.subjectVoid
dc.titleNumerical Study of Hydrofoils for Water Turbines
dc.typeThesis
thesis.degree.departmentCivil Engineering
thesis.degree.disciplineOcean Engineering
thesis.degree.grantorTexas A & M University
thesis.degree.nameMaster of Science
thesis.degree.levelMasters
dc.contributor.committeeMemberMercier, Richard
dc.contributor.committeeMemberXie, Zhizhang
dc.type.materialtext
dc.date.updated2016-09-22T19:51:04Z
local.etdauthor.orcid0000-0002-1126-8753


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