Numerical Investigation of Flow Fields in Inductively Coupled Plasma Wind Tunnels
Numerical Investigation of Flow Fields in Inductively Coupled Plasma Wind Tunnels
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DOI：
10.1088/1009-0630/16/10/06
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发表时间：
2014-10
影响因子：
1.7
通讯作者：
M. Yu 喻;Yusuke Takahashi;H. Kihara;K. Abe;Kazuhiko Yamada;T. Abe
中科院分区：
文献类型：
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作者：
M. Yu 喻;Yusuke Takahashi;H. Kihara;K. Abe;Kazuhiko Yamada;T. Abe
对10 kW和110 kW电感耦合等离子体（ICP）风洞进行了数值模拟，研究了以空气为工作气体的ICP炬和真空室内部流动的物理特性。求解了二维可压缩轴对称Navier-Stokes（N-S）方程，该方程考虑了空气中的11种组分和49种化学反应。采用热源模型来描述加热现象，而不是求解电磁方程组。在真空室中，四温度模型与N-S方程耦合。10千瓦ICP风洞的数值结果，并详细讨论了作为一个代表性的情况。结果表明，真空室内等离子体流动趋于局部热化学平衡。为了研究操作条件对流场的影响，针对不同的腔室压力和/或输入功率进行了模拟。对上述两个ICP风洞的计算结果与相应的实验数据进行了比较。计算结果与实验结果吻合较好，从而可以清楚地了解ICP风洞的流场。
Numerical simulations of 10 kW and 110 kW inductively coupled plasma (ICP) wind tunnels were carried out to study physical properties of the flow inside the ICP torch and vacuum chamber with air as the working gas. Two-dimensional compressible axisymmetric Navier-Stokes (N-S) equations that took into account 11 species and 49 chemical reactions of air, were solved. A heat source model was used to describe the heating phenomenon instead of solving the electromagnetic equations. In the vacuum chamber, a four-temperature model was coupled with N-S equations. Numerical results for the 10 kW ICP wind tunnel are presented and discussed in detail as a representative case. It was found that the plasma flow in the vacuum chamber tended to be in local thermochemical equilibrium. To study the influence of operation conditions on the flow field, simulations were carried out for different chamber pressures and/or input powers. The computational results for the above two ICP wind tunnels were compared with corresponding experimental data. The computational and experimental results agree well, therefore the flow fields of ICP wind tunnels can be clearly understood.