Abstract:
Within the
kinetic approach limits the analytic solution of the thermal creep
flow problem in the form of Neumann's series is contracted. As the
basic equation it is used the linearize BGK (Bhatnagar, Gross,
Krook) model of Boltzmann kinetic equation, and as a boundary
condition on walls of the channel - the model of mirror-diffusion
reflections. For various values of thickness of the channel and
factor of accommodation of a tangential impulse of molecules of gas
by the walls of the channel values of streams of weight of gas and
heat falling unit of width of the channel are calculated. Comparison
with the similar results published in an open press is lead.
Keywords:flow
of gas in the channel, thermal creep, Boltzmann kinetic equation,
model kinetic equations, exact analytical decisions, models of
boundary conditions.