Numerical design of a Knudsen pump with curved channels operating in the slip flow regime
A numerical procedure has been developed for modeling 2D thermal creep flows with Fluent®. Complete first order velocity slip, including thermal creep and walls curvature effects, as well as temperature jump, boundary conditions, are implemented via C routines. After validation on benchmark flows, the technique is used for designing a Knudsen pump with curved microchannels and it is demonstrated that this micropump can be efficient in the slip flow regime.
KeywordsMass Flow Rate Velocity Slip Knudsen Number Temperature Jump Straight Channel
The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under Grant Agreement GASMEMS no 215504. The authors thank Prof. Luc Mieussens and Prof. Kazuo Aoki for the provided comments and tabulated data from their published works.
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