A vortex-dipole sheet model for a wake
A vortex-dipole sheet model for a wake
复制标题
尾流的涡旋偶极子片模型
DOI:
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发表时间:
1989
期刊:
影响因子:
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通讯作者:
R. Krasny
中科院分区:
文献类型:
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作者:
R. Krasny
A vortex model for a free shear layer with a wake component is proposed. The layer is represented by a curve which supports both a vortex sheet and a vortex‐dipole sheet. The vortex sheet yields a monotonic velocity profile that connects the outer flows on either side of the shear layer. The vortex‐dipole sheet captures the effect of oppositely signed vorticity that is present in the wake due to boundary layers upstream from the separation point. The equations governing a vortex‐dipole sheet are given and a temporal instability calculation for a free sinusoidal wake shows the development of a vortex street.