Comparison of supercavity geometry and gas leakage behavior between the double-cavity flow pattern and the wake-closure flow pattern

The objective of this paper is to investigate the effect two typical supercavity flow patterns (double-cavity and wake-closure) on ventilated geometry supercavitating structure further reveal different mechanisms gas leakage for these patterns. An inhomogeneous multiphase model with shear stress transport turbulence was employed validate investigation by experimental results. investigated quantitatively between contrast, corresponding were determined. results show that compared those wake-closure pattern, maximum diameter full-length double-cavity pattern decreased 9.83% 35.8%, respectively, under same entrainment coefficient. reason apparent difference in dimension amount leaking from closure region different. For about 6.0% leaks region. However, more region, which four times pattern. As a result, mass rate reverse decreases, leading decrease size where flows reversely.