Abstract
In the present work, rarefaction effects on shock propagation in a micro-duct in the configuration of a shock tube are investigated. Three-dimensional Navier-Stokes equations with both slip and no-slip boundary conditions are used for the analysis at relatively high Knudsen numbers in the range of 0.00338-0.0677. It is shown that rarefaction effects have a significant effect on shock attenuation, although Navier-Stokes computation with no-slip boundary condition is sufficient to model it for the Knudsen numbers considered in this work. The dependence of slip boundary conditions on wall accommodation coefficients is also discussed.
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