Abstract
In this paper, each of the two phases in dense two-phase flow is considered as continuous medium and the fundamental equations for two-phase flow are described in Eulerian form. The generalized constitutive relation of the Bingham fluid is applied to the dispersed phase with the analysis of physical mechanism of dense two-phase flow. The shearing stress of dispersed phase at a wall is used to give a boundary condition. Then a mathematical model for dense two-phase flow is obtained. In addition, the expressions of shearing stress of dispersed phase at a wall is derived according to the fundamental model of the factional collision between dispersed-phase particles and the wall.
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