Momentum and mass fluxes in a gas confined between periodically structured surfaces at different temperatures.

  title={Momentum and mass fluxes in a gas confined between periodically structured surfaces at different temperatures.},
  author={A. A. Donkov and Sudarshan Tiwari and Tengfei Liang and Steffen Hardt and Axel Klar and Wenjing Ye},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  volume={84 1 Pt 2},
  • A. Donkov, S. Tiwari, W. Ye
  • Published 1 March 2011
  • Physics
  • Physical review. E, Statistical, nonlinear, and soft matter physics
It is well known that in a gas-filled duct or channel along which a temperature gradient is applied, a thermal creep flow is created. Here we show that a mass and momentum flux can also be induced in a gas confined between two parallel structured surfaces at different temperatures, i.e., orthogonal to the temperature gradient. We use both analytical and numerical methods to compute the resulting fluxes. The momentum flux assumes its maximum value in the free-molecular flow regime, the… 

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