Influence of water compressibility on the entry process of high-speed projectile
In order to study the influence of fluid compressibility on the high-speed water entry projectiles,the numerical simulation of the entry process of projectiles with different entry speeds and different entry angles was carried out.The results show that at different entry angles,compared with the incompressible fluid,with the increase of the water entry speed of the projectile,the cavitation size gradually decreases,and the resistance of the projectiles increases.Considering the compressibility of the fluid,the maximum deviation of the cavitation size exceeds 20%,and the maximum deviation of the velocity direction of the water entry trajectory can reach 1.7 times of the difference.For high-speed water entry projectiles,the influence of fluid compressibility on flow field parameters is more significant.
high speed water entryfluid compressibilitysupercavitationload characteristicshydrodynamic characteristics
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