CAJ | 학술논문

将k-ε模型应用到存在激渡的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.
장k-ε모형응용도존재격도적Richtmyer-Meshkov불은정성유도혼합적연구중,채용대수관계식보충모형적봉폐가설,급출료합리묘술RMI특정적단동능산생항적표체식.채용해모형대량개격파관실험진행료모의.통과여실험화문헌중적직접모의결과비교분석,험증료소채용적모형봉폐、모형상수、수치산법、정서실현시합괄적.
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 com-pared with detailed experiment data or DNS results by other authors to prove the validation of the model clo-sure', model constants, numerical algorithm and the implementation of the model used in the paper.