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Simulation of Pressure and Temperature Driven Flows in Microchannels



The gas flows in a microchannel are rarefied and characterized by Knudsen numbers in the range of transition flows. The introduction of a small parameter related to the geometry and the application of the Principle of Least Degeneracy to the dimensionless Navier‐Stokes or Burnett equations allow to yield models for the study of flows with small Mach number and with small or moderate Knudsen number. On the other hand, Direct Simulation of Monte Carlo method is used to analyze the flow within a microchannel connecting two open areas containing the same gas under different thermodynamic equilibrium conditions. Some comparisons are presented.;



AIP Conference ProceedingsAmerican Institute of Physics

Published: Dec 31, 2008

Keywords: channel flow; fluid dynamics; Knudsen flow

DOI: 10.1063/1.3076451

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