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Proceedings of the Mavlyutov Institute of Mechanics





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Ilyasov A.M. Modeling of pressure losses on friction in three-layer laminar flows Proceedings of the Institute of Mechanics of Ufa Branch of RAS. 3 (2003). 208–219.
2003. Vol. 3. Issue 1, Pp. 208–219
URL: http://proc.uimech.org/uim2003.1.015,en
DOI: 10.21662/uim2003.1.015
Modeling of pressure losses on friction in three-layer laminar flows
Ilyasov A.M.
Institute of Mechanics, Ufa

Abstract

In this paper we propose a model for determining the pressure loss due to friction in each phase in a three-layer laminar steady flow of immiscible liquid and gas flow in a flat channel.

This model generalizes an analogous problem for a two-layer laminar flow, proposed earlier. The relations obtained in the final form for the pressure loss due to friction in liquids can be used as closing relations for the three-fluid model.

These equations take into account the influence of interphase boundaries and are an alternative to the approach used in foreign literature. In this approach, the wall and interphase voltages are approximated by the formulas for a single-phase flow and do not take into account the mutual influence of liquids on the loss of pressure on friction in phases. The distribution of flow parameters in these two models is compared.

Keywords

friction loss,
three-layer model,
laminar flow,
interphase boundary