ELIMINATION OF THE NON-PHYSICAL OSCILLATIONS IN MULTI-MATERIAL, MULTI-PHASE COMPRESSIBLE FLOWS
H.R. Anbarlooei1; Saeed Parvar2; D.O.A. Cruz3
1 Mechanical Engineering Program, Federal University of Rio de Janeiro (COPPE/UFRJ), Brazil; 2 Department of Engineering, Payam Noor University of Rasht, Iran; 3 S.parvar@ gmail.com
doi:10.20906/CPS/COB-2015-0976
Resumo
Numerical simulation of multi material flows are one of the most challenging problems among computational fluid dynamics researches. The main difficulty of these problems is producing some unexpected oscillations at material interface which introduces some error in to computation. For eliminating the error, a very simple algorithm, which proposed by Abgrall and Karni, is used to prevent generating the oscillations at the interfaces. Then the original 1D Cartesian model is extended to 2D axi-symmetric geometry by adding geometric source terms. Finally, the result of 1D and 2D codes are evaluated to verify the developed algorithm by some standard problems. The comparison shows that the results have very good accuracy in comparison with experimental and numerical result of other researches.
Palavras-chave: Shock wave; combustion; Richtmyer-Meshkov; hydrodynamical instabilities