In this article, a fully compressible two-phase flow model combined with a multi-component real-fluid phase equilibrium solver is proposed for cavitation modeling. The model is able to simulate the dissolving process of non-condensable gas through resolving the real-fluid phase change equations. A three-dimensional cavitating nozzle test is considered to validate the suggested model. The achieved numerical results have been compared to the available x-ray experiments. The results have confirmed that the model can tackle the phase transition phenomena including gas dissolving and homogeneous nucleation processes. Thus, the cavitation inception has been modeled dynamically when the fluid crosses the phase boundary from the single-phase state to the two-phase state and vice versa. The effects of non-condensable gas on the cavitation inception, development, and unsteadiness have been particularly analyzed, based on the large eddy simulations and x-ray experiments. Finally, the encountered challenges are mentioned, aiming at providing recommendations for similar research studies.

中文翻译：

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考虑溶解不凝气体的空化建模中的真实流体相变

在本文中，提出了一种完全可压缩的两相流模型，结合多组分真实流体相平衡求解器，用于空化建模。该模型能够通过求解真实流体相变方程来模拟不凝性气体的溶解过程。考虑了三维空化喷嘴测试来验证建议的模型。已将获得的数值结果与可用的 X 射线实验进行了比较。结果证实，该模型可以处理相变现象，包括气体溶解和均匀成核过程。因此，当流体从单相状态穿过相边界到两相状态时，空化开始已被动态建模，反之亦然。不凝性气体对空化起始的影响，基于大涡模拟和 X 射线实验，特别分析了发展和不稳定性。最后，提到了遇到的挑战，旨在为类似的研究提供建议。