Effects of Suction on the Nonstationary Lower Branch Modes of a Compressible Boundary Layer Flow Due to a Rotating Disk

2005 ◽  
Vol 115 (4) ◽  
pp. 357-385 ◽  
Author(s):  
M. Turkyilmazoglu
2019 ◽  
Vol XVI (2) ◽  
pp. 13-22
Author(s):  
Muhammad Ehtisham Siddiqui

Three-dimensional boundary-layer flow is well known for its abrupt and sharp transition from laminar to turbulent regime. The presented study is a first attempt to achieve the target of delaying the natural transition to turbulence. The behaviour of two different shaped and sized stationary disturbances (in the laboratory frame) on the rotating-disk boundary layer flow is investigated. These disturbances are placed at dimensionless radial location (Rf = 340) which lies within the convectively unstable zone over a rotating-disk. Mean velocity profiles were measured using constant-temperature hot-wire anemometry. By careful analysis of experimental data, the instability of these disturbance wakes and its estimated orientation within the boundary-layer were investigated.


2016 ◽  
Vol 81 (5) ◽  
pp. 940-960 ◽  
Author(s):  
P. D. Towers ◽  
Z. Hussain ◽  
P. T. Griffiths ◽  
S. J. Garrett

2012 ◽  
Vol 24 (3) ◽  
pp. 031701 ◽  
Author(s):  
Shintaro Imayama ◽  
P. Henrik Alfredsson ◽  
R. J. Lingwood

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