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Numerical Study of Magnetoaerodynamic Flow Around a Hemisphere

机译:绕半球磁气动流动的数值研究

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Newly developed computational tools are used to compute hypersonic flow around a hemisphere cylinder that uses a magnet located within the body as a means of heat flux mitigation. These tools include an improved electrical conductivity model and a parallelized three-dimensional magnetohydrodynamic module that is loosely coupled to a three-dimensional fluid code. Several electrical conductivity models are explored for a range of magnetic field strengths. Results show the shock standoff distance increases when the magnetic field is applied, but the distance is highly dependent on the conductivity model selected. The increase in shock standoff distance reduces the gradients in the shock layer, thereby reducing the peak heat flux to the body. However, the total heat flux slightly increases due to additional heating to the aft section of the geometry.
机译:新开发的计算工具用于计算半球圆柱体周围的高超音速流,该半球体圆柱体使用位于体内的磁铁作为热通量的缓解方法。这些工具包括改进的电导率模型和与三维流体代码松散耦合的并行三维磁流体动力学模块。针对一定范围的磁场强度,探索了几种电导率模型。结果表明,当施加磁场时,冲击隔离距离会增加,但该距离很大程度上取决于所选的电导率模型。冲击隔离距离的增加会减小冲击层中的梯度,从而降低到达人体的峰值热通量。但是,由于对几何体后部的附加加热,总热通量会略有增加。

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