Formation of vortex wakes at flow separation from plate
- Authors: Gorelov D.N.1, Govorova A.I.1
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Affiliations:
- Omsk Branch of Sobolev Institute of Mathematics SB RAS
- Issue: Vol 24, No 3 (2017)
- Pages: 361-368
- Section: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/216961
- DOI: https://doi.org/10.1134/S0869864317030052
- ID: 216961
Cite item
Abstract
The plane nonlinear initial boundary value problem about the separated flow past a plate set in motion at a constant velocity from the state of rest has been considered. Results of a numerical experiment which have allowed us to trace in detail the vortex-wake formation process behind a vertical plate are reported. It is shown that, after the beginning of the plate motion, several stable vortical structures, including a Karman street, form in succession behind the plate. It is found that, on the emergence of the Karman street, there occurs a sharp and substantial growth of vortex-wake intensity and hydrodynamic drag force with a pulsating time behavior. A conclusion about the origination, in this regime, of self-sustained oscillations of the liquid in the vicinity of the plate is drawn.
About the authors
D. N. Gorelov
Omsk Branch of Sobolev Institute of Mathematics SB RAS
Author for correspondence.
Email: gorelov@ofim.oscsbras.ru
Russian Federation, Omsk
A. I. Govorova
Omsk Branch of Sobolev Institute of Mathematics SB RAS
Email: gorelov@ofim.oscsbras.ru
Russian Federation, Omsk