The new mode of instability in viscous high-speed boundary layer flows
Fluid Dynamics
2020-05-14 v1
Abstract
The new mode of instability found by Tunney et al. 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 () in the base flow. The present study shows that under practical Reynolds numbers, the new mode can hardly co-exist with 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.
Keywords
Cite
@article{arxiv.1808.01943,
title = {The new mode of instability in viscous high-speed boundary layer flows},
author = {Jie Ren and Youcheng Xi and Song Fu},
journal= {arXiv preprint arXiv:1808.01943},
year = {2020}
}
Comments
12 pages, 6 figures, published at http://www.global-sci.org/intro/article_detail.html?journal=aamm&article_id=12587