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Re-entrant Gas Flows of High-speed Ventilated Supercavity

Excerpt

Re-entrant jet closure mechanism usually occurs for ventilated supercavitating flows at high speed in unbounded flows. The tail closure pattern is closely related to gas-leakage mechanism. The multi-fluid model, which involves interphase momentum and mass interactions, is applied to simulate the flows. Re-entrant flow mechanism is analyzed with more detail, and gas velocity distribution laws are presented in the re-entrant flow region. It is also found that maximum gas velocity occurs in the region. The maximum value is much greater than the incoming flow velocity in the opposite direction, and the relationship between the two is illustrated. This study contributes to deeply understand the gas entrainment and closure mechanism of high-speed supercavity.

Introduction
Multiphase Flow Model
Results and Discussion
Conclusion
References
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