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基于 Ｆｒａｖｅ 平均的 Ｎ Ｓ方程和 Ｂ／ Ｌ 湍流模型，采用了 Ｊａｍ ｅｓｏｎ 格式和 Ｍ Ｕ Ｓ Ｃ Ｌ 格式，对外流在亚声、超声和零 Ｍ ａｃｈ 数三种状态时矩形喷管的喷流流场进行了数值模拟，探讨了内外喷流及喷管内的流动特征，并与实验数据进行了比较，计算结果与实验结果吻合较好，验证了计算所使用的 Ｎ Ａ Ｐ Ａ 软件的可靠性，从而为用计算流体力学的方法模拟具有两股来流的三维湍流流场提供了一种有效的手段。
Based on the Frave average N S equation and the B / L turbulence model, Jam eson format and MUSC L format were adopted. The jet flow of the rectangular nozzle when the outflow was in three states of subsonic, ultrasonic and zero M ach Field numerical simulation was conducted to investigate the internal and external flow and nozzle flow characteristics and experimental data were compared with the calculated results agree well with the experimental results to verify the reliability of the calculation of the NAPA software used, Therefore, it is an effective method to simulate the three-dimensional turbulent flow field with two incoming flows by computational fluid dynamics.