A Hybrid Dispersed-Large Interface Solver for multi-scale two-phase flow modelling

•Modelling of flows with wide range of interfacial length-scales is addressed.•An Euler-Euler two-fluid solver is presented for such hybrid flows.•A systematic validation of the solver is presented using eight test cases.•Modelling capability is demonstrated for both segregated and dispersed flow regimes.•Qualitative agreement on overall flow physics in comparison to reference data is shown.