流向涡管存在拉伸和变形。
给出了转捩边界层中流向涡产生的物理过程。
The process for the formation of the streamwise vortex in a transitional boundary layer is described.
细涡丝在涡辫区的三维演化形成趋向流场最大拉伸变形方向的流向涡结构。
The thin vortex filament deforms three-dimensionally in the braid and generates stream-wise vortex structures which incline to the region maximum deformation direction of the flow field.
采用格子涡方法对二维平板混合层流动进行了数值模拟，重点考察了格子涡方法定量模拟混合层流动流场下游不同流向位置各湍流统计平均量的能力。
The mixing layer flow is numerically simulated by the Vortex-in-Cell method, with the emphasis on its ability of simulating quantitatively the spatially developed mixing layer.
定量比较了流场不同断面的流向速度平均值、脉动强度、混合层的动量厚度及涡量厚度等流动量。
The DNS results are compared with the classic experimental results of Lasheras et al on the plane mixing layer.
风洞实验采用PIV测量了沿流向下游不同截面的涡量场和速度场，测量截面距机翼后缘最远达到20倍弦长。
Wind tunnel measurement gives the velocity field and vorticity field in intersection plane at different downstream position, which is up to 20 times cord-length.
风洞实验采用PIV测量了沿流向下游不同截面的涡量场和速度场，测量截面距机翼后缘最远达到20倍弦长。
Wind tunnel measurement gives the velocity field and vorticity field in intersection plane at different downstream position, which is up to 20 times cord-length.
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