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Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2011002769
pages 233-250

Viscous and Inviscid Solutions of Some Gas Mixture Problems

Iman Zahmatkesh
Department of Mechanical Engineering, Islamic Azad University, Mashhad Branch, Mashhad, Iran
Homayoun Emdad
School of Mechanical Engineering, Shiraz University, Shiraz 71348-51154, Iran
Mohammad M. Alishahi
School of Mechanical Engineering, Shiraz University, Shiraz 71348-51154, Iran

RESUMO

The aim of the present paper is to simulate some gas mixture problems in the context of a converging-diverging nozzle. A recently proposed multifluid model is utilized for the description of the flow fields. The model consists of separate balance equations for each component species of the system. Thereby, it provides details of the flow fields for each of the constituents separately, which is not available in other continuum descriptions. The new model also computes transport coefficients from some kinetic relations without the requirement of being input externally. Moreover, it automatically describes diffusion processes excluding the use of any coefficients for ordinary, pressure, and thermal diffusion that are generally required in Navier-Stokes computation of gas mixture flows.
During the analysis of the current mixture problems, the viscous as well as the inviscid forms of the multifluid balance equations are solved and the corresponding results are compared with those of the Navier-Stokes and Euler equations.


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