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对在湍流计算中已得到广泛应用的Ｂａｌｄｗｉｎ／Ｌｏｍａｘ（Ｂ／Ｌ）代数湍流模型进行了修正。修正后的Ｂ／Ｌ模型考虑了压力梯度及物面引射速度对内层ＶａｎＤｒｉｅｓｔ衰减因子的影响。与此同时，文中还用修正的Ｂ／Ｌ湍流模型对亚声平板附面层流动、拉伐尔喷管内的正激波／湍流附面层干扰流动进行了计算。计算与实验结果比较表明，修正后的Ｂ／Ｌ模型不仅可以更准确地计算具有强压力梯度的激波／附面层干扰区内流动压力分布，而且还可以准确地预报激波／附面层干扰引起的流动分离，从而为Ｂ／Ｌ模型的工程应用开拓了领域。
The Baldwin / Lomax (B / L) algebraic turbulence model, which has been widely used in turbulence calculation, is revised. The modified B / L model considers the influence of the pressure gradient and the apparent velocity on the inner VanDriest attenuation factor. In the meantime, the modified B / L turbulence model is used to calculate the interference of the sub-acousto-planar laminar flow and the frontal / turbulent flow in the Laval nozzle. The comparison between the calculated and experimental results shows that the modified B / L model not only can calculate the flow pressure distribution in the shock / overburden zone with strong pressure gradient more accurately, but also can accurately predict the shock / overburden Interference caused by the flow of separation, which opened up areas for engineering applications B / L model.