Numerical comparison of unsteady compressible viscous flow in convergent channel

0376886 - ÚT 2013 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Pořízková, P. - Kozel, Karel - Horáček, Jaromír
Numerical comparison of unsteady compressible viscous flow in convergent channel.
Application of Mathematics 2012. Prague: Institute of Mathematics AS CR, 2012 - (Brandts, J.; Chleboun, J.; Korotov, S.), s. 203-213. ISBN 978-80-85823-60-8.
[Application of Mathematics 2012. Prague (CZ), 02.05.2012-05.05.2012]
Grant CEP: GA ČR(CZ) GAP101/11/0207
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: finite volume method * simulation of flow in vibrating glottis * biomechanics of voice
Kód oboru RIV: BI - Akustika a kmity

This study deals with a numerical solution of a 2D flows a compressible viscous fluids in a convergent channel for low inlet airflow velocity. Three governing systems – Full system, Adiabatic system, Iso-energetic system based on the Navier-Stokes equations for laminar flow are tested. The numerical solution is realized by finite volume method and the predictor-corrector MacCormack scheme with Jameson artificial viscosity using a gird of quadrilateral cells. This unsteady grid of quadrilateral cells is considered in the form of conservation laws using Arbitrary Lagrangian-Eulerian method. The numerical results, acquired from a developed program. Are presented for inlet velocity ûĄ = 4,12ms-1 and Reynolds number Re = 4 x 103.
Trvalý link: http://hdl.handle.net/11104/0209180