Experimental investigation on underwater drag reduction using partial cavitation
Wang Bao1, Wang Jiadao1, †, Chen Darong1, Sun Na1, 2, Wang Tao1, 3
       

Image of gas on the hydrophobic microgrooved surface in flowing water. (a) Initial time of measurement, 0 min, (b) 10 min, (c) 20 min, (d) 40 min.