A study on formulation and numerical analysis of the flow field of a submerged water jet.

在分析浸没水射流中的空化行为时，不能忽略液体的可压缩性。然而，在基于双流体模型的常规平均方程中，使用了一个附加惯性力方程。本研究采用考虑可压缩性的附加惯性力方程，揭示了在线性问题范围内，可压缩性不影响以往的解析结果。在此基础上，对某流体单相传热问题进行了数值模拟，验证了计算方法和结果的有效性。

When we analyze the cavitation behavior in a submerged water jet, the compressibility of a liquid should not be omitted. However, an added inertia force equation which is absent from that compressibility has been used in the conventional averaged equations based on a two-fluid model. In this study, the added inertial force equation where the compressibility was considered was adopted, and then it was revealed that the compressibility does not affect the past analytical results in the range of linear problem. And furthermore, the numerical simulation of a heat transfer problem in the liquid single phase was performed, and the validities of the computation method and results were confirmed.