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给出了转捩边界层中流向涡产生的物理过程 .这个过程是Λ 涡和二次涡环相互作用产生旋涡轴向失稳断裂造成的 .
The physical process of flow vortex in the transitional boundary layer is given, which is caused by the interaction between the Λ vortex and the secondary vortex ring.