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Thermomolecular pressure difference at low knudsen numbers


The experimental dependence of the thermomolecular pressure difference on the average pressure is found for He, Ne, H2, and D2 in the viscous-flow regime (Kn−1=100–500). The experimental data are compared with analytic expressions in the literature.

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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 25, No. 3, pp. 456–459, September, 1973.

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Borisov, S.F., Kulev, A.N., Porodnov, B.T. et al. Thermomolecular pressure difference at low knudsen numbers. Journal of Engineering Physics 25, 1131–1133 (1973).

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  • Experimental Data
  • Statistical Physic
  • Pressure Difference
  • Average Pressure
  • Experimental Dependence