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着重讨论顺流喷射情况下的超音速混合的流场特征及影响因素。简要介绍了顺流喷射混合的研究现状。同时，探讨了不同的来流参数对流场特征的影响及混合机理。计算采用了一种二阶ＴＶＤ格式有限体积法及Ｂ－Ｌ湍流模型求解二维湍流Ｎ－Ｓ方程。结果表明：所采用的计算方法能成功地抑制非物理振荡，适用于二维超音速内流的湍流混合特性研究。
The flow field characteristics and influencing factors of supersonic mixing in the case of downstream injection are emphatically discussed. The research status of downstream jet mixing is briefly introduced. At the same time, the influence of different flow parameters on the flow field characteristics and the mixing mechanism are discussed. A second-order TVD finite volume method and a B-L turbulence model are used to solve the two-dimensional turbulent N-S equation. The results show that the proposed method can restrain non-physical oscillation successfully and is suitable for the study of turbulent mixing characteristics of two-dimensional supersonic inflow.