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采用7组元化学模型并应用组分公式计算电导率,通过求解黏性MHD(magneto-hydro-dy-namics)方程组,研究了不同强度均匀磁场对三维钝头体高超声速绕流化学非平衡流动的影响.结果表明,随着磁场的增强,激波脱体距离逐渐增加;总阻力系数和壁面温度逐渐减小.在By=0.03 T磁场作用下,与无磁场的结果相比,化学非平衡流中的激波脱体距离增加约7%,总阻力系数减小约5%,局部壁面温度最大降低74%;而冻结流中的激波脱体距离增加约43%,总阻力系数减小约6.9%,局部壁面温度最大降低18%.
In this paper, the chemical composition of seven elements and the composition formula were used to calculate the conductivity. By solving the magneto-hydro-dy-namics equations, the effects of different magnetic fields with uniform intensity on the chemical non-equilibrium flow The results show that with the increase of the magnetic field, the shock off-off distance gradually increases and the total drag coefficient and the wall temperature decrease gradually. Under the magnetic field of By = 0.03 T, the chemical unbalance The shock off-body distance in the flow increased by about 7%, the total drag coefficient decreased by about 5% and the maximum partial wall temperature decreased by 74%. The shock drag-off distance in the frozen flow increased by about 43% and the total drag coefficient decreased About 6.9%, the maximum local wall temperature decreased by 18%.