边界层吸力
边界层厚度
逆压力梯度
材料科学
流动分离
层流
表面光洁度
层流下层
边界层控制
边界(拓扑)
雷诺数
光学
作者
C. V. Seal,C. R. Smith
标识
DOI:10.1007/s003480050373
摘要
An experimental evaluation of the effects of spatially-limited (i.e. localized) surface suction on a turbulent junction flow was performed using Particle Image Velocimetry (PIV). The results indicate that surface suction can (1) weaken both the instantaneous turbulent vortex and its associated surface interactions in the symmetry plane, (2) effectively eliminate the presence of the average turbulent necklace vortex in the symmetry plane, and (3) weaken the average downstream extensions of the vortex. It was also established that suction effectively reduces the low frequency component of the Reynolds-stress in both the symmetry plane and trailing-edge cross-stream planes, and stabilizes the behavior of the trailing vortex legs.
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