COUPLED LEVEL-SET/VOLUME-OF-FLUID METHOD FOR THE SIMULATION OF LIQUID ATOMIZATION IN PROPULSION DEVICE INJECTORS
COUPLED LEVEL-SET/VOLUME-OF-FLUID METHOD FOR THE SIMULATION OF LIQUID ATOMIZATION IN PROPULSION DEVICE INJECTORS
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推进装置喷射器中液体雾化模拟的液位/流体体积耦合方法
DOI：
10.2514/6.2010-7136
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Whitney Rocketdyne
中科院分区：
文献类型：
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作者：
M. Arienti;Xiaoyi Li;M. Soteriou;C. Eckett;R. Jensen;Whitney Rocketdyne
本文介绍了利用水平集/流体体积耦合方法模拟液体燃料雾化的多相计算流体动力学程序的结果。该耦合方法结合了流体体积法（VOF）的质量守恒特性和水平集法（LS）的精确表面重建特性，并将表面张力作为一种二阶精度计算的体积力。多相代码建立在Sussman等人开发的方法之上，该方法可以实现气泡流动，液体破裂和相变模拟。本文提出的模型的扩展包括耦合到一个拉格朗日分散相模型，用于液滴的破裂后跟踪和多个水平集，用于跟踪多种类的表面和液滴。本文给出了两种与液体火箭发动机燃烧相关的类似对类似射流碰撞的模拟，分别在低喷射速度和高喷射速度下进行，并与验证数据进行了比较。此外，还展示了首次演示模拟不同的撞击射流。
This paper presents results of a multiphase computational fluid dynamics code utilizing a coupled level-set/volume-of-fluid method to simulate liquid fuel atomization. The coupled approach combines the mass conservation properties of the volume-of-fluid (VOF) method with the accurate surface reconstruction properties of the level-set (LS) method, and includes surface tension as a volume force calculated with second-order accuracy. The multiphase code builds upon a methodology developed by Sussman et al. [1] which enables bubbly flow, liquid breakup, and phase change simulations. Extensions to the model presented in this paper include coupling to a Lagrangian dispersed phase model for postbreakup tracking of droplets and multiple level-sets for tracking of surfaces and droplets of multiple species. Two simulations of like-on-like jet impingement of relevance to liquid rocket engine combustion are presented here, at low and high injection velocity, with comparison to validation data. Also shown is the first-ever demonstration simulation of unlike impinging jets.