Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf

A new CFD-strategy of a generalized two-phase flow (GENTOP) is presented. The idea of GENTOP combines a multi-field simulation with the recently developed Multiple Size Group (MUSIG) -approach. In the MUSIG-framework, transfers between the different bubble size groups due to bubble coalescence and –breakup are described. By modelling an additional mass transfer between the polydispersed and continuous gas phase, transitions between different gas morphologies can be considered. The continuous gas phase represents the largest gas structures so that for these structures the gas-liquid-interfaces are resolved. This new concept can give a more detailed explanation of complex flow situations, particularly with higher gas fractions, such as the impinging jet being just one application. First results computed by the CFD-code CFX 13.0 are compared to experiments and theoretical data reported in literature.