A model for inductive plasma wind tunnels
A model for inductive plasma wind tunnels
复制标题
感应等离子体风洞模型
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
G. Degrez
中科院分区：
文献类型：
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作者：
T. Magin;G. Degrez
建立了感应等离子体风洞的数值模型。该模型给出了感应焊枪出口处等离子体射流中热防护材料前方边界层的流动条件。从运动学理论出发，推导了流体动力场的控制方程。电磁场是由麦克斯韦方程推导出来的。从玻耳兹曼方程出发，导出了弱热非平衡条件下部分电离和未磁化等离子体的输运性质。给出了火星大气输运碰撞积分的动力学数据库。将基于Krylov子空间的多组分传输算法与混合规则在精度和计算代价上进行了比较。用半经典统计力学计算了局部热力学平衡下的组成和热力学性质，给出了感应风洞的电磁场和流体动力场。采用数值模拟的方法，对总压测量技术进行了深入的研究。
A numerical model for inductive plasma wind tunnels is developed. This model provides the flow conditions at the edge of a boundary layer in front of a thermal protection material placed in the plasma jet stream at the outlet of an inductive torch. The governing equations for the hydrodynamic field are derided from the kinetic theory. The electromagnetic field is deduced from the Maxwell equations. The transport properties of partially ionized and unmagnetized plasma in weak thermal nonequilibrium are derived from the Boltzmann equation. A kinetic data base of transport collision integrals is given for the Martian atmosphere. Multicomponent transport algorithms based upon Krylov subspaces are compared to mixture rules in terms of accuracy and computational cost. The composition and thermodynamic properties in local thermodynamicequilibrium are computed from the semi-classical statistical mechanics.The electromagnetic and hydrodynamic fields of an inductive wind tunnel is presented. A total pressure measurement technique is thoroughly investigated by means of numerical simulations.