实施带相变的 VoF 求解器,模拟喷射器中的内部空化和液滴破裂

Bjørn Christian Dueholm, Jesper de Claville Christiansen, B. Endelt, Nikolaj Kristensen, J. Hærvig
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引用次数: 0

摘要

本研究介绍了流体体积(VoF)求解器的实现和推导,该求解器能够考虑压力驱动的相变并处理三种流体。实施的代码旨在研究内部喷嘴空化以及随后的喷射和射流破裂。此外,还实施了一个扩展的空化模型,可以处理存在第三相时的相变。详细描述和推导了数学系统。求解器在文献中的一维基准案例上进行了验证,并在实验证明的几何图形上进行了验证。通过将速度剖面和流动图像与实验测量和可视化进行比较,验证结果表明可以很好地捕捉到发展中的空化机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Implementation of a VoF solver with phase change for the simulation of internal cavitation and droplet breakup in injectors
This study presents the implementation and derivation of a Volume of Fluid (VoF) solver capable of taking into account pressure driven phase change and handle three fluids. The implemented code is designed to investigate internal nozzle cavitation and subsequent injection and jet breakup. An extended cavitation model is also implemented that can handle phase change in the presence of a third phase. Detailed description and derivation of the mathematical system is presented. The solver is validated on a one-dimensional benchmark case from the literature and verified on an experimentally well-documented geometry. The verification shows the developing cavitation regime is well captured by comparing velocity profiles and flow images with experimental measurements and visualisation.
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