Pressure driven rarefied gas flow through a slit and an orifice

• Published in: Vacuum Vol. 86; no. 11; pp. 1701 - 1708
• Main Authors: Misdanitis, S., Pantazis, S., Valougeorgis, D.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 31.05.2012
• Subjects: Kinetic theory; Knudsen number; Rarefied gas dynamics; Vacuum flows; Knudsen number; Kinetic theory; Vacuum flows; Rarefied gas dynamics

The flow of a monatomic gas through a slit and an orifice due to an arbitrarily large pressure difference is examined on the basis of the nonlinear Bhatnagar–Gross–Krook (BGK) model equation, subject to Maxwell diffuse boundary conditions. The governing kinetic equation is discretized by a second-or...