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) Comparison of experimental drag reduction rate of transverse microgrooved surface with FAS-17 film and untreated grooved surface. A negative drag reduction rate indicates that the measured skin-friction drag is greater than that of the smooth surface.