| 磁流体流动控制中的磁场配置效率研究 |
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| 引用本文： | 陈刚,张劲柏,李椿萱.磁流体流动控制中的磁场配置效率研究[J].力学学报,2008,40(6):752. |
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| 作者姓名： | 陈刚 张劲柏 李椿萱 |
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| 作者单位： | 北京航空航天大学 航空科学与工程学院 北京航空航天大学航空科学与工程学院 北京航空航天大学航空工程与科学学院 |
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| 摘 要： | 采用数值模拟方法研究了不同磁场空间构型对弹道式再入飞行器基准外形表面热流分
布的影响. 计算模型为低磁雷诺数近似下的磁流体力学模型. 数值模拟结果表明两个大小相
同、方向不同的磁偶极子对表面热流密度分布的影响存在较大差异，由此指出热流控制应用
中磁场配置的效率问题. 随后的磁场详细作用机理分析表明上述差异的原因在于不同空间磁
场分布对流动能量转化机制的影响不同. 以此为基础给出了在流动的不同区域，磁场空间分
布应遵循的一般性原则.
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| 关 键 词： | 磁流体力学 低磁雷诺数近似 磁场配置 热流控制 |
| 收稿时间： | 2007-08-06 |
| 修稿时间： | 2008-07-25 |
EFFICIENCY ANALYSIS OF MAGNETIC FIELD CONFIGURATION IN MHD FLOW CONTROL |
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| Chen Gang
,
Zhang Jinbai
,
Li Chunxuan.EFFICIENCY ANALYSIS OF MAGNETIC FIELD CONFIGURATION IN MHD FLOW CONTROL[J].chinese journal of theoretical and applied mechanics,2008,40(6):752. |
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| Authors: | Chen Gang Zhang Jinbai Li Chunxuan |
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| Institution: | National Laboratory for Computational Fluid Dynamics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China National Laboratory for Computational Fluid Dynamics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China National Laboratory for Computational Fluid Dynamics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Influences of the magnetic field configuration on the
heat flux density distribution along a ballistic reentry vehicle surface
were numerically investigated with the low magnetic Reynolds number
approximation of MHD (Magnetohydrodynamics) model. The numerical results
show the distinct difference of the effects on the heat flux density
distribution of the two magnetic dipoles with the same magnitude and
different orientations, indicating the efficiency problem in heat flux
management by utilizing MHD method. Due to the influences of the magnetic
dipoles on the energy conversion mechanism of the flow, the principles of
the magnetic field configuration in heat flux mitigation are developed. |
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| Keywords: | MHD low magnetic Reynolds approximation magnetic field configuration heat flux management |
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