Title of article :
Comparative study of wall-force models for the simulation of bubbly flows
Rzehak، نويسنده , , Roland and Krepper، نويسنده , , Eckhard and Lifante، نويسنده , , Conxita، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Accurate numerical prediction of void-fraction profiles in bubbly multiphase-flow relies on suitable closure models for the momentum exchange between liquid and gas phases. We here consider forces acting on the bubbles in the vicinity of a wall. A number of different models for this so-called wall-force have been proposed in the literature and are implemented in widely used CFD-codes. Simulations using a selection of these models are compared with a set of experimental data on bubbly air–water flow in round pipes of different diameter. Based on the results, recommendations on suitable closures are given.
Journal title :
Nuclear Engineering and Design Eslah