中国海洋工程(英文版)
中國海洋工程(英文版)
중국해양공정(영문판)
CHINA OCEAN ENGINEERING
2015年
2期
209-222
,共14页
李林娟%郑金海%彭于轩%张继生%吴修广
李林娟%鄭金海%彭于軒%張繼生%吳脩廣
리림연%정금해%팽우헌%장계생%오수엄
horizontal axis tidal turbine%numerical simulation%turbine performance%flow motion%steady current%marine renewable energy
Horizontal axis tidal turbines have attracted more and more attentions nowadays, because of their convenience and low expense in construction and high efficiency in extracting tidal energy. The present study numerically investigates the flow motion and performance of a horizontal axis tidal turbine with a supporting vertical cylinder under steady current. In the numerical model, the continuous equation and incompressible Reynolds-averaged Navier-Stokes equations are solved, and the volume of fluid method is employed to track free surface motion. The RNG k-εmodel is adopted to calculate turbulence transport while the fractional area/volume obstacle representation method is used to describe turbine characteristics and movement. The effects of installation elevation of tidal turbine and inlet velocity on the water elevation, and current velocity, rotating speed and resultant force on turbine are discussed. Based on the comparison of the numerical results, a better understanding of flow structure around horizontal axis tidal turbine and turbine performance is achieved.