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首页> 外文期刊>Journal of Mechanical Science and Technology >Comparative study of incompressible and isothermal compressible flow solvers for cavitating flow dynamics
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Comparative study of incompressible and isothermal compressible flow solvers for cavitating flow dynamics

机译：不可压缩和等温可压缩流动求解器空化流动动力学的比较研究

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摘要

Incompressible flow solvers are generally used for numerical analysis of cavitating flows, but with limitations in handling compressibility effects on vapor phase. To study compressibility effects on vapor phase and cavity interface, pressure-based incompressible and isothermal compressible flow solvers based on a cell-centered finite volume method were developed using the OpenFOAM libraries. To validate the solvers, cavitating flow around a hemispherical head-form body was simulated and validated against the experimental data. The cavity shedding behavior, length of a re-entrant jet, drag history, and the Strouhal number were compared between the two solvers. The results confirmed that computations of the cavitating flow including compressibility effects improved the reproduction of cavitation dynamics.
机译：不可压缩的流动求解器通常用于空化流的数值分析，但在处理对气相的可压缩性方面存在局限性。为了研究可压缩性对气相和腔界面的影响，使用OpenFOAM库开发了基于压力的不可压缩和等温可压缩流动求解器，该求解器基于单元中心有限体积法。为了验证求解器，模拟并围绕实验数据验证了围绕半球形头形体的空化流。比较了两个求解器的腔体脱落行为，折返喷嘴的长度，阻力历史和Strouhal数。结果证实，包括可压缩性效应在内的空化流的计算改善了空化动力学的再现。

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