激波管实验和果冻实验界面不稳定性数值计算  

Numerical Simulation for Shock Tube and Jelly Interface Instability Experiments

作　　者：柏劲松[1] 王涛[1] 邹立勇[1] 黄文斌[1] 李平[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,绵阳621900

出　　处：《应用力学学报》2009年第3期418-425,共8页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(10672151;10772166);国防科技工业技术基础质量与可靠性项目(Z112009B004);中国工程物理研究院科学技术发展基金(2008B0202011)

摘　　要：运用算子分裂技术,增加二阶空间中心差方法和两步Rung-Kutta时间推进方法计算动力学粘性以及热流部分对流场的影响,将可压缩多介质流体动力学高精度欧拉计算方法MFPPM发展到适用于NS(Navier Stokes)方程的可压缩多介质粘性流体计算方法MVPPM。通过与界面不稳定性实验结果的比较,来检验计算方法的正确性,并验证计算程序的有效性。主要包括一个激波管实验和两个果冻实验,即英国AWE(Atomic Weapons Establishment)激波管实验和LLNL实验室的果冻环实验以及中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室进行的爆轰驱动下单层果冻界面不稳定性实验。研究结果表明:数值模拟结果与实验测量结果以及对应时刻的实验图象均吻合较好。The compressible multi-viscousity-fluid hydrodynamic high-resolution method MVPPM (Multi-Viscousity-Fluid Piecewise Parabolic Method) is developed to the NS (Navier-Stokes) equations based on the Eulerian method MFPPM (Multi-Fluid Piecewise Parabolic Method). The molecule dynamics viscosity and heat flux effects on flow field are evaluated by operator splitting technique. The second order space central difference method and two-stage Rung-Kutta time marching method are employed in the MVPPM. For the verification and the validation of MVPPM code, three interface instability experiment models are chosen to simulated, which includes AWE (Atomic Weapons Establishment) shock tube experiment, a jelly experiment model from LLNL(Lawrence Livermore National Laboratory), and a jelly experiment model from National Key Laboratory of Shock Wave and Detonation Physics.

关 键 词：界面不稳定性 激波管 高精度计算格式 NAVIER STOKES方程 多介质粘性流体计算方法 

分 类 号：O357[理学—流体力学]