TY - JOUR
AU - Veress, Árpád
AU - Molnár, János
AU - Rohács, József
PY - 2009/01/01
Y2 - 2023/12/01
TI - Compressible viscous flow solver
JF - Periodica Polytechnica Transportation Engineering
JA - Period. Polytech. Transp. Eng.
VL - 37
IS - 1-2
SE -
DO - 10.3311/pp.tr.2009-1-2.13
UR - https://pp.bme.hu/tr/article/view/1864
SP - 77-81
AB - Nowadays, in spite of disadvantages of turbulence closure models for RANS(Reynolds Averaged Navier-Stokes equations), they are at present the onlytools available for the computation of complex turbulent flows of practicalrelevance. Their popularity comes from high efficiency in terms of accuracyand computational cost, which makes them widely used in commercial codes andrelated multidisciplinary applications. Hence, for modelling compressibleflow, as a framework of complex inverse design optimisation tool,Navier-Stokes solver is implemented by using k-<I>ω </I> turbulence model inC++ environment. The governing equations in conservative form are deduced byusing Favre averaging to filter local fluctuations. The code is based onstructured, density based cell centred finite volume method. The convectiveterms are discretized by Roe approximated Riemann method. Centraldiscretization is applied for diffusive terms. MUSCL approach is implementedfor higher order spatial reconstruction with Mulder limiter for monotonicitypreserving. Wilcox k-<I>ω </I> two equations turbulence model is implementedfor turbulence modelling. The explicit system of the equations is solved bythe 4<I><sup>th</sup></I> order Runge-Kutta method. The numerical boundary conditions arebased on the method of characteristics. The interest is mostly in high speedaeronautical applications with the possibility of extension for surfaceoptimisation. Hence, the applied validational test cases are in transonicand supersonic flow regime: circular bump in the transonic channel andcompression corner.
ER -