用湍流模型研究Richtmyer-Meshkov不稳定性诱导的湍流混合  

The study of turbulent mixing induced by Richtmyer-Meshkov instability using turbulence model

作　　者：杨玟[1] 王丽丽[1] 张树道[1] 何长江[1] 杭义洪[1] 

机构地区：[1]北京应用物理与计算数学研究所,北京100094

出　　处：《空气动力学学报》2010年第1期119-123,共5页Acta Aerodynamica Sinica

摘　　要：将k-ε模型应用到存在激波的Richtmyer-Meshkov不稳定性诱导混合的研究中,采用代数关系式补充模型的封闭假设,给出了合理描述RMI特征的湍动能产生项的表达式。采用该模型对两个激波管实验进行了模拟。通过与实验和文献中的直接模拟结果比较分析,验证了所采用的模型封闭、模型常数、数值算法、程序实现是合适的。k-ε model is used to study the turbulent mixing induced by Richtmyer-Meshkov instability in the presence of shocks.Classic closure relations are supplemented with algebraic relations and the expression of the production term of turbulent kinetic energy reasonably describing the characteristics of Richtmyer-Meshkov instability is given.Two shock-tube experiments are simulated by this model.The results are compared with detailed experiment data or DNS results by other authors to prove the validation of the model closure,model constants,numerical algorithm and the implementation of the model used in the paper.

关 键 词：湍流模型 RICHTMYER-MESHKOV不稳定性 湍流混合 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]