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Numerical Computation uf Unsteady Compressible Flows with Very Low Mach Numbers
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SYSNO ASEP 0313309 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Numerical Computation uf Unsteady Compressible Flows with Very Low Mach Numbers Title Numerický výpočet nestacionárního stlačitelného proudění při velice nízkých Machových číslech Author(s) Punčochářová, P. (CZ)
Kozel, K. (CZ)
Horáček, Jaromír (UT-L) RID, ORCID
Fürst, J. (CZ)Source Title Numerical Mathematics and Advanced Applications. - Berlin : Springer, 2008 / Kunisch K. ; Of G. ; Steinbach O. - ISBN 978-3-540-69776-3 Pages s. 505-512 Number of pages 8 s. Action European Conference on Numerical Mathematics and Advanced Applications /7./ ENUMATH 2007 Event date 10.09.2007-14.09.2007 VEvent location Graz Country AT - Austria Event type WRD Language eng - English Country DE - Germany Keywords fluid structure interaction ; finite volume methods ; vibrating wall of channel Subject RIV BI - Acoustics R&D Projects IAA200760613 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000261093100060 Annotation This study deals with the numerical solution of 2D unsteady flows of a compressible viscous fluid in two types of channels (unsymmetric, symmetric)for a low inlet airflow velocity. The unsteadiness of the flow is caused by a prescribed periodic motion of a part of the channel wall with large amplitudes. The numerical solution is realized by a finite volume method and an explicit predictor-corrector MacCormack scheme with Jameson artificial viscosity using a grid of quadrilateral cells. the moved grid of quadrilateral cells is considered in the form of conservation laws using an Arbitrary Lagrangian-Eulerian method. Numerical results of the unsteady flows in the channels are presented for inlet Mach number 10E-2, Reynolds numbers from 5x10E3 to 1,1x10E4 and for a frequency of the wall motion 20 Hz and 100 Hz. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2009
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