Experimental investigation on underwater drag reduction using partial cavitation

Wang Bao¹, Wang Jiadao^{1, †}, Chen Darong¹, Sun Na^{1, 2}, Wang Tao^{1, 3}

(color online) Schematic diagram of surface topography. Profile of the microgroove has a cross-section with an isosceles trapezoidal shape of height (depth) D; front slope angle α, rear slope angle ; groove width W; and pitch L between two neighbouring grooves.