Numerical Simulation of Gas Flow over Micro-Scale Airfoils
by
Sun, Q., I. Boyd, G.V. Candler
in
Journal of Thermophysics and Heat Transfer, Vol. 16, No. 2, pp. 171-179, Apr.-June, 2002.
Category: Journal Article
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Abstract:
Flows over microscale airfoils are investigated using both particle and continuum approaches. An implementation of the information preservation technique based on the direct simulation Monte Carlo method is used to simulate flows over a flat plate of zero thickness at low Reynolds number (Re < 1 x 10 exp 2), and good agreement is obtained via comparison with experimental data and theoretical results. It is shown that the aerodynamics of a flat plate with thickness ratio of 5 percent at Re = 4 is quite different from that at Re = 4 x 10 exp 3, which were measured experimentally. A continuum approach with slip boundary conditions predicts a similar basic flow pattern as the information preservation method with differences in details, which may indicate that continuum approaches are not suitable for this kind of flow because of rarefied effects.
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