Numerical simulation on penetration of submerged supercavitating vehicle into target with cavitation based on filling method
Aiming at the problem of submerged supercavitation vehicle with cavitation penetrating the target plate,the filling method was used firstly to simulate the cavitation,and the solid-liquid-gas three-phase coupling calculation model was established.And then,the LS-DYNA was used for nume-rical simulation,and the changing process of the cavitation during the penetration process was ob-tained,and thus the correctness of the filling method for simulating the cavitation was verified.The effect of cavitation collapse on vehicle and target plate and the effect of cavitation on penetration re-sults were analyzed lastly.The results show that cavitation collapse can reduce the velocity of vehicle deceleration by nearly 75％.Compared with the state with cavitation,the stress on the penetration site is 20％higher and the final velocity of the vehicle is 7％higher in the state without cavitation.It is therefore necessary to consider the state with cavitation in the problem of supercavitation vehicle penetration.
supercavitation vehiclepenetration with cavitationLS-DYNAcavitation collapse
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