Year: 2018
Author: Jie Ren, Youcheng Xi, Song Fu
Advances in Applied Mathematics and Mechanics, Vol. 10 (2018), Iss. 5 : pp. 1057–1068
Abstract
The new mode of instability found by Tunney et al. [24] is studied with viscous stability theory in this article. When the high-speed boundary layer is subject to certain values of favorable pressure gradient and wall heating, a new mode becomes unstable due to the appearance of the streamwise velocity overshoot ($U(y) > U_∞$) in the base flow. The present study shows that under practical Reynolds numbers, the new mode can hardly co-exist with the conventional first mode and Mack's second mode. Due to the requirement for additional wall heating, the new mode may only lead to laminar-turbulent transition under experimental (artificial) conditions.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/aamm.OA-2017-0298
Advances in Applied Mathematics and Mechanics, Vol. 10 (2018), Iss. 5 : pp. 1057–1068
Published online: 2018-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 12
Keywords: Boundary layer stability compressible boundary layers high-speed flow.