000012450 001__ 12450 000012450 005__ 20160816141446.0 000012450 04107 $$aeng 000012450 046__ $$k2016-05-09 000012450 100__ $$aKyncl, M. 000012450 24500 $$aATMOSPHERIC DISPERSION SIMULATIONS - PASSIVE GAS MIXTURE FLOW 000012450 24630 $$n22.$$pEngineering Mechanics 2016 000012450 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Praha 000012450 506__ $$arestricted 000012450 520__ $$2eng$$aHere we work with the system of equations describing the non-stationary compressible turbulent multi-component flow in the gravitational field, and we focus on the numerical solution of these equations. The mixture of perfect inert gases is assumed. The RANS equations are discretized with the use of the finite volume method. The exact solution of the modified Riemann problem (original results) is used at the boundary faces. The roughness of the surface is simulated using the alteration of the specific dissipation at the wall. The presented computational results are computed with the own-developed code (C, FORTRAN, multiprocessor, unstructured meshes in general). 000012450 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb. 000012450 653__ $$aGas Mixture, RANS, Riemann Problem, Software, 3D. 000012450 7112_ $$aEngineering Mechanics 2016$$cSvratka, CZ$$d2016-05-09 / 2016-05-12$$gEM2016 000012450 720__ $$aKyncl, M.$$iPelant, J. 000012450 8560_ $$ffischerc@itam.cas.cz 000012450 8564_ $$s359334$$uhttps://invenio.itam.cas.cz/record/12450/files/080bo_p_flu.pdf$$yOriginal version of the author's contribution as presented on CD, id 080, section FLU. 000012450 962__ $$r12369 000012450 980__ $$aPAPER