Artificial far-field pressure boundary conditions for wall-bounded stratified flows

0499850 - MÚ 2019 RIV CZ eng C - Conference Paper (international conference)
Bodnár, Tomáš - Fraunié, P.
Artificial far-field pressure boundary conditions for wall-bounded stratified flows.
Topical Problems of Fluid Mechanics 2018. Praha: Institue of Thermomechanics AS CR, 2018 - (Šimurda, D.; Bodnár, T.), s. 7-14. ISBN 978-80-87012-65-9. ISSN 2336-5781.
[Conference TOPICAL PROBLEMS OF FLUID MECHANICS 2018. Praha (CZ), 21.02.2018-23.02.2018]
R&D Projects: GA ČR GA16-03230S
Institutional support: RVO:67985840
Keywords : Boussinesq approximation * stable stratification * compact finite-difference * pressure boundary condition
OECD category: Applied mathematics
http://www.it.cas.cz/fm/im/im/proceeding/2018/2

This paper presents an alternative boundary conditions setup for the numerical simulations of stably stratifed flow. The focus of the tested computational setup is on the pressure boundary conditions on the arti cial boundaries of the computational domain. The simple three dimensional test case deals with the steady flow of an incompressible, variable density fluid over a low smooth model hill. The Boussinesq approximation model is solved by an in-house developed high-resolution numerical code, based on compact finite-difference discretization in space and Strong Stability Preserving Runge-Kutta method for (pseudo-) time stepping.
Permanent Link: http://hdl.handle.net/11104/0292041