Author(s)

M. Požarnik & L. Škerget

Abstract

Boundary element method numerical model based on mixture theory of two-phase flow M. Poiarnik & L. Skerget Faculty of Mechanical Engineering, University of Maribor, Slovenia Abstract A boundary element numerical scheme for a flowing mixture of solid particles and a fluid is developed within the context of mixture theory. Major differences between the two in literature on the subject are studied, these are typically employed theories called the averaging approach and mixture theory. A numerical technique applied is the boundary element method based on velocityvorticity formulation of general equations describing the flow of a twocomponent mixture of a Newtonian fluid and a granular solid. Integral representations for conservation and field functions, based on parabolic diffusion fundamental solution, are presented. Special attention is focused on the mechanical interaction between the mixture components. 1 Introduction Fluidised rnultiphase reactors are of increasing importance in nowadays chem

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