ZhETF, Vol. 134,
No. 1,
p. 196 (July 2008)
(English translation - JETP,
Vol. 107, No. 1,
p. 162,
July 2008
available online at www.springer.com
)
GAS FLOW THROUGH A SLIT INTO VACUUM IN A WIDE RANGE OF RAREFACTIONS
Sazhin O.
Received: February 7, 2008
PACS: 47.60.Dx, 47.61.Fg
Gas flow through a two-dimensional slit into vacuum is investigated by a direct simulation Monte Carlo method. Results for mass flow rate are obtained as a function of the rarefaction parameter, which is inversely proportional to Knudsen number. The distributions of density, temperature and mass velocity, and streamlines are presented. In the free molecular flow regime and in the hydrodynamic limit, our results agree with theoretical asymptotes, and in the transition regime, they compare well with numerical simulations by other authors.
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