Wave energy is one of the most available sources of renewable energy in the world. It has been previously proven that the flapping foil can generate thrust forces using energy from the surface waves and an empirical formula was proposed to predict the thrust forces generated by a flapping foil consist of NACA0015 section (Kumar and Shin, 2019a). However, the proposed empirical formula was restricted to the head waves i.e. 0° azimuth angle which was not useful for the flapping foils encountering with oblique and following waves. Therefore, in this study, the thrust empirical formula was modified to include the effects of azimuth angles based on the experimentally obtained data. And the modified empirical equations were validated by the combination of foils experimentally.

波浪能是世界上最可利用的可再生能源之一。先前已证明拍打箔片可以利用来自表面波的能量产生推力，并提出了经验公式来预测由NACA0015部分组成的拍打箔片所产生的推力（Kumar和Shin，2019a）。但是，提出的经验公式仅限于顶波，即0°方位角，这对于拍打箔片遇到斜波和跟随波是没有用的。因此，在本研究中，基于实验获得的数据，对推力经验公式进行了修改，以包括方位角的影响。并通过箔片的组合实验验证了修正后的经验方程。