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Original title:
Numerical evaluation of mass-diffusive compressible fluids flows models
Authors: Bodnár, Tomáš ; Fraunié, P.
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2024, Prague (CZ), 20240221
Year: 2024
Language: eng
Abstract: This contribution presents first numerical tests of some recently published alternative models for solution of viscous compressible and nearly incompressible models. All models are solved by high resolution compact finite difference scheme with strong stability preserving RungeKutta time stepping. The two simple but challenging computational test cases are presented, based on the double-periodic shear layer and the Kelvin-Helmholtz instability. The obtained time-dependent flow fields are showing pronounced shear and vorticity layers being resolved by the standard as well as by the new mass-diffusive modified models. The preliminary results show that the new models are viable alternative to the well established classical models.
Keywords: compact finite-difference; compressible Navier-Stokes; mass diffusion; nearly incompressible flow
Project no.: GA22-01591S (CEP), AP2101
Funding provider: GA ČR, AV ČR
Host item entry: Topical Problems of Fluid Mechanics, ISBN 978-80-87012-88-8, ISSN 2336-5781
Note: Související webová stránka: https://doi.org/10.14311/TPFM.2024.004
Institution: Institute of Mathematics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0351290
Permalink: http://www.nusl.cz/ntk/nusl-541542
The record appears in these collections:
Research > Institutes ASCR > Institute of Mathematics
Conference materials > Papers
Authors: Bodnár, Tomáš ; Fraunié, P.
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2024, Prague (CZ), 20240221
Year: 2024
Language: eng
Abstract: This contribution presents first numerical tests of some recently published alternative models for solution of viscous compressible and nearly incompressible models. All models are solved by high resolution compact finite difference scheme with strong stability preserving RungeKutta time stepping. The two simple but challenging computational test cases are presented, based on the double-periodic shear layer and the Kelvin-Helmholtz instability. The obtained time-dependent flow fields are showing pronounced shear and vorticity layers being resolved by the standard as well as by the new mass-diffusive modified models. The preliminary results show that the new models are viable alternative to the well established classical models.
Keywords: compact finite-difference; compressible Navier-Stokes; mass diffusion; nearly incompressible flow
Project no.: GA22-01591S (CEP), AP2101
Funding provider: GA ČR, AV ČR
Host item entry: Topical Problems of Fluid Mechanics, ISBN 978-80-87012-88-8, ISSN 2336-5781
Note: Související webová stránka: https://doi.org/10.14311/TPFM.2024.004
Institution: Institute of Mathematics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0351290
Permalink: http://www.nusl.cz/ntk/nusl-541542
The record appears in these collections:
Research > Institutes ASCR > Institute of Mathematics
Conference materials > Papers
Record created 2024-03-10, last modified 2024-03-10