Modeling liquid hydrogen cavitating flow with the full cavitation model
Modeling liquid hydrogen cavitating flow with the full cavitation model
复制标题
使用全空化模型模拟液氢空化流
DOI：
10.1016/j.ijhydene.2008.08.068
复制
发表时间：
2008-12
影响因子：
7.2
通讯作者：
zhang
中科院分区：
文献类型：
--
作者：
zhang
空化是在液体内形成蒸汽气泡，其中流动动力学导致局部静压下降到蒸汽压力以下。本文致力于发展一种有效的计算策略，以模拟液体火箭推进应用相关的液氢空化。这些目标是通过在Hord的报告中使用所谓的全空化模型对2D水翼和轴对称尖拱上的液氢流动进行稳态计算流体动力学（CFD）研究来实现的。在气液两相热平衡的假设下，论证了热力学效应。与温度相关的流体热力学性质指定沿着从“Gaspak 3.2”数据库的饱和线。计算的表面压力，温度和实验数据的霍德之间的合理协议。具体而言，进行了全局敏感性分析，以检查湍流计算的壁网格分辨率，壁处理和模型参数的变化的敏感性。提出了合适的近壁模型和网格分辨率。完整的空化模型与默认的模型参数提供了解决方案，具有可比的精度，在液氢片空化的两个几何形状。
Cavitation is the formation of vapor bubbles within a liquid where flow dynamics cause the local static pressure to drop below the vapor pressure. This paper strives towards developing an effective computational strategy to simulate liquid hydrogen cavitation relevant to liquid rocket propulsion applications. The aims are realized by performing a steady state computational fluid dynamic (CFD) study of liquid hydrogen flow over a 2D hydrofoil and an axisymmetric ogive in Hord's reports with a so-called full cavitation model. The thermodynamic effect was demonstrated with the assumption of thermal equilibrium between the gas phase and liquid phase. Temperature-dependent fluid thermodynamic properties were specified along the saturation line from the “Gaspak 3.2” databank. Justifiable agreement between the computed surface pressure, temperature and experimental data of Hord was obtained. Specifically, a global sensitivity analysis is performed to examine the sensitivity of the turbulent computations to the wall grid resolution, wall treatments and changes in model parameters. A proper near-wall model and grid resolution were suggested. The full cavitation model with default model parameters provided solutions with comparable accuracy to sheet cavitation in liquid hydrogen for the two geometries.
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DOI：
--
发表时间：
2003
期刊：
--
影响因子：
--
作者：
Y. A. Bouziad;M. Farhat;Faiçal Guennoun;J. Kueny;F. Avellan;K. Miyagawa
通讯作者：
Y. A. Bouziad;M. Farhat;Faiçal Guennoun;J. Kueny;F. Avellan;K. Miyagawa
影响因子：
2.8
作者：
R. Kunz;D. Boger;D. R. Stinebring;T. Chyczewski;J. Lindau;H. Gibeling;S. Venkateswaran;T. Govindan-T.-Govin
通讯作者：
R. Kunz;D. Boger;D. R. Stinebring;T. Chyczewski;J. Lindau;H. Gibeling;S. Venkateswaran;T. Govindan-T.-Govin
影响因子：
2
作者：
Hosangadi, A;Ahuja, V
通讯作者：
Ahuja, V
DOI：
10.2514/6.2005-1286
发表时间：
2005-01
期刊：
--
影响因子：
--
作者：
Y. Utturkar;S. Thakur;W. Shyy
通讯作者：
Y. Utturkar;S. Thakur;W. Shyy
影响因子：
2.1
作者：
J. Ishimoto;K. Kamijo
通讯作者：
J. Ishimoto;K. Kamijo