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Numerical Study of Dense Fluid Flow in Narrow Pores

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Abstract

Unsteady-state dense flows in narrow slitlike pores that result from pulse perturbations of the initial steady state are analyzed for the case of argon flow in a carbon pore whose walls have microasperities. The flow is modeled using a new microhydrodynamic approach in which the dissipation coefficients are calculated according to the lattice gas model. This method enables one to analyze the molecular concentration and velocity distributions as functions of the distance from the pore wall. It is shown how a local flow pattern is affected by microasperities, which reduce the pore width. The evolution of the concentration and longitudinal flow velocity fields is traced from the instant of perturbation until the establishment of a quasi-steady state.

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Authors and Affiliations

  1. Karpov Research Institute of Physical Chemistry, ul. Vorontsovo pole 10, Moscow, 103064, Russia

    Yu. K. Tovbin, R. Ya. Tugazakov & V. N. Komarov

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  1. Yu. K. Tovbin
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  2. R. Ya. Tugazakov
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  3. V. N. Komarov
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Tovbin, Y.K., Tugazakov, R.Y. & Komarov, V.N. Numerical Study of Dense Fluid Flow in Narrow Pores. Theoretical Foundations of Chemical Engineering 36, 99–106 (2002). https://doi.org/10.1023/A:1014923026745

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