Inhomogeneous MUSIG (iMUSIG) approach
The exchange of mass, energy and momentum essentially is determined by the bubble size, which are influenced by bubble coalescence and breakup. For an adequate description of these phenomena in the framework of a population balance approach decades of bubble size groups are necessary. To limit the computational approach these were considered only in the continuity equation. For the momentum equation the size classes are assigned to only few velocity groups (see Fig. 1). This enables at least very roughly the consideration of the dependence of momentum exchange on bubble size. Separation of large and small bubbles is an essential phenomenon for the description of morphology changes (s. Fig. 2).
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The inhomogeneous MUSIG model for the simulation of polydispersed flows
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