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Power and thrust coefficients of the horizontal axis tidal stream turbine with different twist angles, blade numbers, and section profiles

Abbasi Alireza, Ghassemi Hassan, Molyneux David

Zeszyty Naukowe Akademii Morskiej w Szczecinie

2019

nr 57 (129)

11--20

The purpose of this research was to investigate the power and thrust coefficients of a horizontal axis tidal stream turbine (HATST) with different blade geometries, including twist angles, blade numbers, and section profiles. The RANS equations and Star-CCM+ commercial software were used to numerically analyze these variables. Furthermore, the turbulence model used in this study is a Realisable k-ε turbulent model. Nine different models were defined by changing the twist angle, thickness, camber, and blade numbers. The results are presented, and the power and thrust coefficients are compared against TSR for each of the nine different models. The pressure distribution and flow velocity contour are also presented and discussed.