Determination of Optimum Nozzle Shape of a Direct Drive Turbine by CFD Analysis
The purpose of this study is to examine the influence of nozzle shape on the performance of a direct drive turbine for wave energy converter. The performance of the turbine is calculated by the variation of nozzle shape using a commercial CFD code. The results show that nozzle shape should be designed considering wave height and flow rate entering to the turbine. Best efficiencies of the turbine by 4 types of the nozzle shape do not change largely but overall performances vary mainly by the cross-sectional area of nozzle inlet. The output power of the direct drive turbine changes considerably by the nozzle shape, and a partial region of Stage 2 in the runner blade passage obtain maximum regional output power in comparison with the other region of the runner blade passage.
direct drive turbine wave energy converter nozzle shape performance internal flow
Young-Do Choi Chang-Goo Kim You-Taek Kim Young-Ho Lee
Industry-Academic Cooperation Foundation, Korea Maritime University 1 Dongsam-dong, Youngdo-ku, Busa Department of Mechanical Engineering, Graduate School, Korea Maritime University Department of Marine System Engineering, Korea Maritime University Division of Mechanical Engineering and Information Engineering, Korea Maritime University
国际会议
The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)
北京
英文
322-327
2008-11-25（万方平台首次上网日期，不代表论文的发表时间）