We discuss the effect of shear work at solid boundaries in small scale gaseous flows where slip effects are present. The effect of shear work at the boundary on convective heat transfer is illustrated through solution of the constant-wall-heat-flux problem in the slip-flow regime. We also present predictions for the dissipation in terms of the mean flow velocity in pressure-driven and gravity-driven Poiseuille flows for arbitrary Knudsen numbers. All results are verified using direct Monte Carlo solutions of the Boltzmann equation.

Issue Section:
Technical Notes
Keywords:
shear flow, convection, Knudsen flow, slip flow, Poiseuille flow, Monte Carlo methods, Boltzmann equation, Heat Transfer, Microscale, Molecular Dynamics, Monte Carlo, Nanoscale
Topics:
Convection, Energy dissipation, Flow (Dynamics), Gas flow, Gravity (Force), Heat, Poiseuille flow, Pressure, Shear (Mechanics), Slip flow, Heat transfer, Simulation, Temperature
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Copyright © 2003
 by ASME
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