Magnetic hydrodynamic calculation on planar and cylindrical configurations
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摘要: 在一维弹塑性反应流体力学Lagrange编码SSS的基础上，研制了多介质、多空腔、与集中参数外电路耦合的实验构形弹塑性反应磁流体力学一维计算编码SSS-MHD。在编码中，通过对构形边界与外电路的耦合以及不同构形磁场边界条件的统一处理等措施，解决了其中的关键问题。本文中编码的优势体现在两个方面：能够统一处理不同的磁流体力学实验构形，包括平面及圆柱面几何构形；可以同时进行磁流体力学和含能材料反应流动的计算。对平面准等熵压缩炸药和炸药爆轰驱动套筒压缩磁通量等两类典型实验进行了数值计算，结果与实验结果一致。Abstract: In this work we developed a one-dimensional elastic-plastic reactive magnetic hydrodynamic code SSS/MHD with multi-medium, multi-cavities and coupling with external circuits on experimental configurations, based on the Lagrange code SSS. The key problems in coding were resolved through defining the configuration boundary coupling with circuits and unifying the treatment of the magnetic field boundary conditions of various configurations. The advantages of our coding are mainly shown in that, on the one hand, the various magnetic hydrodynamic experiment configurations-including both planar and cylindrical ones-can be handled in a unified fashion and, on the other, that the magnetic and reactive hydrodynamic calculation can be simultaneously conducted. Thus, following our way of coding, two typical experiments were calculated, i.e. the magnetic driven isentropic compression planar explosive and the explosive detonation driven liner for flux compression, the results of which accord with the experimental results.
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Key words:
- fluid mechanics /
- calculation code /
- multi-field couple /
- isentropic compression
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图 3 平面、圆柱面MHD构形的磁场围线
Figure 3. Magnetic surrounding lines on planar and cylindrical MHD configurations
图 6 内爆圆柱套筒磁通量压缩实验
Figure 6. Magnetic flux compression experiment of imploding cylindrical liners
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