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首页> 外文期刊>Journal of Spacecraft and Rockets >Flow Control Over a Backward-Facing Step with Application of a Magnetic Field
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Flow Control Over a Backward-Facing Step with Application of a Magnetic Field

机译：施加磁场后向步骤的流量控制

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摘要

High-speed flows over a backward-facing step that is subject to an applied magnetic field are numerically simulated. The global domain of computation has been decomposed into upstream and downstream domains from the step location. The low magnetic Reynolds number approximation under a multiblock grid approach is used for modeling the backstep flow. Flux-vector splitting for the convective terms and central differencing for the diffusion terms are used. A time-explicit multistage Runge-Kutta scheme for time integration is implemented. Pressure distribution for the Navier-Stokes analysis is found to be in good agreement with the experimental data. Different types of magnetic field distributions are investigated. Both uniform and variable electrical conductivity distributions have been considered. It has been observed that an increase in the separation zone and displacement of oblique shock wave toward the exit section occurs subsequent to application of the magnetic field. Comparison of results obtained with uniform and variable electrical conductivities has shown a reduction in magnetic interaction for variable electrical conductivity.
机译：数值模拟了向后台阶上的高速流动，该台阶受到施加的磁场的影响。计算的全局域已从步骤位置分解为上游域和下游域。在多块网格方法下的低磁雷诺数近似值用于建模后向流动。对流项使用磁通矢量分裂，扩散项使用中心差分。实现了一种用于时间积分的时间显式多级Runge-Kutta方案。 Navier-Stokes分析的压力分布与实验数据非常吻合。研究了不同类型的磁场分布。已经考虑了均匀和可变的电导率分布。已经观察到，在施加磁场之后，分离区域增加并且倾斜冲击波向出口部分移位。比较具有均匀电导率和可变电导率的结果，表明对于可变电导率，磁相互作用降低了。

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