The IMA Volumes in Mathematics and its Applications
The IMA Volumes in Mathematics and its Applications
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发表时间：
2011
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通讯作者：
James Glimm Andrew;James Glimm
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文献类型：
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作者：
James Glimm Andrew;James Glimm
本文描述了激波在气体界面折射的数值计算。本文研究了二氧化碳中的平面激波以入射角IT撞击二氧化碳和甲烷之间的平面气体界面。这里的主要焦点是波系统的结构作为一个固定的（弱）入射冲击强度的入射角的函数。计算结果与激波规则折射极线理论相吻合，包括准确地预测了反射膨胀和反射激波之间的过渡。他们还产生了从规则到不规则折射的过渡和前驱波系统的发展的详细图片。特别是，计算表明，对于所研究的特定情况下，前体冲击减弱，成为一个带的压缩波的入射角的增加，在不规则的制度。
This paper describes the numerical computation of a shock wave refracting at a gas interface. We study a plane shock in carbon dioxide striking a plane gas interface between the carbon dioxide and methane at angle of incidence IT;. The primary focus here is the structure of the wave system as a function of the angle of incidence for a fixed (weak) incident shock strength. The computational results agree well with the shock polar theory for regular refraction including accurately predicting the transition between a reflected expansion and a reflected shock. They also yield a detailed picture of the transition from regular to irregular refraction and the development of a precursor wave system. In particular, the computations indicate that for the specific case studied the precursor shock weakens to become a band of compression waves as the angle of incidence increases in the irregular regime.