Unsteady Heat Transfer In a Gas Mixture

Alexey Polikarpov,Irina Graur,Minh Tuan Ho

doi:10.1051/matecconf/20168400031

Alexey Polikarpov, Irina Graur + Show 1 more

Open Access

https://doi.org/10.1051/matecconf/20168400031

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Abstract

The time-dependent problem of heat transfer between two parallel plates in a binary gas mixture was investigated on the basis of numerical solution of BGK type kinetic model equation with collision integral taken in the form of McCormack model. The time evolution of the normal heat flux was simulated and time needed to reach the steady state conditions was obtained.

Highlights

Heat and mass transfer phenomena in a gas near a heated or cooled surface play a key role in large number of technological processes
The heat transfer in a rarefied gas mixture confined between two parallel plates was intensively studied during the last decades, see Refs. [1,2,3]
Only a single work is devoted to the consideration of unsteady heat transfer in a binary gas mixture confined between concentric cylinders [4]

Summary

Introduction

Heat and mass transfer phenomena in a gas near a heated or cooled surface play a key role in large number of technological processes. If the Knudsen number becomes larger than one a gas inside this device must be considered as rarefied and its behavior must be simulated on the basis of the Boltzmann equation. The heat transfer in a rarefied gas mixture confined between two parallel plates was intensively studied during the last decades, see Refs.

Results

Conclusion