Large-Eddy Simulation of Coaxial LN2/GH2 Injection at Trans- and Supercritical Conditions
Large-Eddy Simulation of Coaxial LN2/GH2 Injection at Trans- and Supercritical Conditions
复制标题
跨临界和超临界条件下同轴 LN2/GH2 注入的大涡模拟
DOI：
10.2514/6.2015-0843
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
S. Hickel
中科院分区：
文献类型：
--
作者：
H. Müller;M. Pfitzner;J. Matheis;S. Hickel
对超临界压力下液氮和预热氢同轴喷射流场进行了大涡模拟。条件与典型的液体推进剂火箭燃烧室相似。以氮气为模型气体，在不干扰化学反应的情况下，研究了混合过程。在剪切层中出现的热力学条件的分析表明，局部相分离可能会发生，如果注射条件是跨临界的。介绍了一种新的体积平移方法的基础上的立方彭-罗宾逊状态方程用于多物种大涡模拟和测试的跨和超临界注入条件。新的热力学模型修正了Peng-Robinson状态方程在跨临界状态下的不足之处，并以最小的额外计算成本。两个独立开发的大涡模拟代码用于模拟和结果进行了比较。结果表明，T…
Large-eddy simulations are carried out for the coaxial injection of liquid nitrogen and preheated hydrogen at supercritical pressures. The conditions are similar to that in typical liquid-propellant rocket combustors. By using nitrogen as a model gas, the mixing process is studied without the interference with chemical reactions. An analysis of the thermodynamic conditions that arise in the shear layer reveals that local phase separation may occur if the injection condition is transcritical. A novel volume-translation method on the basis of the cubic Peng–Robinson equation of state is introduced for the use in multispecies large-eddy simulations and is tested for both trans- and supercritical injection conditions. The new thermodynamic model corrects the deficiencies of the Peng–Robinson equation of state in the transcritical regime at minimal extra computational cost. Two independently developed large-eddy simulation codes are used for the simulations and the results are compared. The outcome indicates t...
影响因子：
4.6
作者：
S. Hickel;Christian P. Egerer;J. Larsson
通讯作者：
S. Hickel;Christian P. Egerer;J. Larsson
影响因子：
4.6
作者：
Mueller, Hagen;Niedermeier, Christoph A.;Hickel, Stefan
通讯作者：
Hickel, Stefan