Dispersed multiphase flows coupling between phase

Figure 4.2 coupling between phases in dispersed multiphase flows (from Elghobashi, 1991). 

The governing momentum equations of the continuous phase are solved numerically after discretization in space and time. In almost aU multiphase flows, the coupling between the continuous and dispersed phase dominates the transport equations of the continuous phase. When trying to solve these equations, it is therefore useful to locally Hnearize the interphase momentum force density as follows ... 

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