Flow Instability in a Curved Duct of Rectangular Cross Section
Flow Instability in a Curved Duct of Rectangular Cross Section
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矩形横截面的弯曲管道中的流动不稳定性
DOI：
10.1115/1.2910071
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发表时间：
1992
影响因子：
2
通讯作者：
J. Humphrey
中科院分区：
文献类型：
--
作者：
A. Belaidi;Mark W. Johnson;J. Humphrey
为了研究这种几何形状中流动不稳定性的发展，在矩形横截面的弯曲管道中进行了实验研究。热线风速测量用于获得不同曲率比的管道对称平面上的速度的详细测量结果。随着管道 Dean 数的增加，离心不稳定性会发展，并且 Dean 涡流会沿着内壁振荡
An experimental investigation has been carried out in a curved duct of rectangular cross section in order to study the development of flow instability in such geometries. Hot wire anemometry was used to obtain detailed measurements of velocity on the symmetry plane of the duct for different curvature ratios. As the duct Dean number is increased, a centrifugal instability develops and the Dean vortices are seen to oscillate along the inner wall