带窗口准等熵压缩实验的流场反演技术

Backward analysis for isentropic compression experiments with windows backed on samples

1.
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China;
2.
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

摘要: 在一维拉格朗日平面准等熵压缩流体力学的基础上，建立了带窗口准等熵压缩实验流场反演方法，给出了界面处压力历史的求法，编制了实现流场反演技术的程序，并与一般流体力学计算进行了比较；对Z575号实验给出的界面速度历史进行了反演计算，给出了的Al 6061-T6等熵压缩线。
- 流体力学 /
- 流场反演方法（反积分方法） /
- Lagrange分析 /
- 准等熵压缩实验 /
- 窗口
Abstract: A one-dimensional Lagrangian backward integeration method was used to analyze VISAR records of isentropic compression experiments. The pressure history at the window-sample interface calculated by the interface velocity history was proved to be successful. A contrast calculation shows that the backward method is as accurate as the forward method. Analysis of the Z575 experiments shows that the isentropic compression curves of Al 6061-T6 are in good agreement with that by Hall C A.
- fluid mechanics /
- backward integration method /
- Lagrange analysis /
- isentropic compression experiment /
- window