水动力学研究与进展B辑
水動力學研究與進展B輯
수동역학연구여진전B집
JOURNAL OF HYDRODYNAMICS
2013年
6期
886-894
,共9页
李瑶%许唯临%张亚磊%张敬威%陈春祺%阿蓉
李瑤%許唯臨%張亞磊%張敬威%陳春祺%阿蓉
리요%허유림%장아뢰%장경위%진춘기%아용
convex body%cavitation bubble%collapse%high speed camera%cavitation noise
Cavitation bubbles behind a convex body were experimentally studied by a high speed camera and a hydrophone synch- ronously. The experiments were conducted in a circulating water tunnel with five various contraction ratios:b=0.497,b=0.6,b=0.697,b=0.751, andb=0.799. The distributions of the cavitation bubble collapse positions behind the five different convex bodies were obtained by combining the images taken by the high speed camera. According to the collapse positions, it was found that no cavitation bubble was collapsed in the region near the wall until the ratio of the water head loss over the convex body height was larger than 20, which can be used to predict if the cavitation damage would occur in the tunnel with orifice energy dissipaters.
