We present a numerical simulation of the so-called condensation shock on a NACA0015 hydrofoil with a finite mass transfer model for the first time. Most recently, condensation shock was indentified in the experimental measurement as a mechanism for partial cavity shedding in the flow past a hydrofoil. Compressible solvers, which were adopted in the previous simulations to study such phenomenon numerically, are extremely time consuming due to the limitation of acoustic Courant number. In this work, we consider a finite mass transfer model for cavitation flow with slightly modification. Our numerical results show that the finite mass transfer model can be successfully applied for calculating the condensation shock in the flow past a hydrofoil. The dynamics of the condensation shock on the hydrofoil is also discussed. The model is proved to be useful for further understanding of the underlying phyiscs of such flow.

中文翻译：

---

水翼部分空化流中凝结冲击的数值模拟

我们首次使用有限的传质模型对NACA0015水翼上的所谓凝结冲击进行了数值模拟。最近，凝结冲击在实验测量中被确定为通过水翼流的部分空腔脱落的机制。由于声学库仑数的限制，以前的模拟中采用的可压缩求解器通过数值方法研究了这种现象，因此非常耗时。在这项工作中，我们考虑对气穴流动进行有限修改的有限质量传递模型。我们的数值结果表明，有限质量传递模型可以成功地用于计算流过水翼的流中的凝结冲击。还讨论了水翼上的凝结冲击动力学。