Topical Problems of Fluid Mechanics


Institute of Thermomechanics AS CR, v.v.i.	CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics	MIO Université du Sud Toulon Var - AMU - CNRS - IRD	Czech Pilot centre ERCOFTAC

Stratified Flow Fine Structure Around a Sloping Plate
Yuli D. Chashechkin, Ia. Zagumennyi
Abstract:
Based on the open source software a method was constructed for 2D numerical solution of the fundamental system of equations for incompressible stratified fluid, which allows analysing both dynamics and fine structure of flows in a wide range of Reynolds numbers. The problem of flow formation around a uniformly moving sloping plate in viscous incompressible salt solution is considered in the range of Reynolds numbers, 1 < Re < 100 000. The stratified flow structure around a sloping plate was analysed for different angles of attack and classified into a number of typical flow regimes depending on prevailing structural components in the flow. Geometry of vortices and upstream perturbations, which are common for all kinds of fluids, as well as internal waves and thin interfaces, which are specific for stratified media, were investigated.
Keywords:
stratified flow, internal waves, vortices, finite volume, OpenFOAM

Fulltext: PDF DOI: https://doi.org/10.14311/TPFM.2017.012

In Proceedings Topical Problems of Fluid Mechanics 2017, Prague, 2017 Edited by David Šimurda and Tomáš Bodnár, pp. 87-94 ISBN 978-80-87012-61-1 (Print) ISSN 2336-5781 (Print)