Baseline Model For CFD Of Dispersed Bubbly Flow

Rzehak, R.; Liao, Y.; Lucas, D.; Krepper, E.

Baseline Model For CFD Of Dispersed Bubbly Flow

Rzehak, R.; Liao, Y.; Lucas, D.; Krepper, E.

A set of closure relations for adiabatic bubbly flow has been collected that represents the best available knowledge and may serve as a baseline for further improvements and extensions to more general situations. Submodels for bubble forces, bubble-induced turbulence and bubble coalescence and breakup are considered. A preliminary validation of the model is presented by comparison to selected tests from the TOPFLOW database. Specific attention is paid to effects of polydispersity. Issues to be addressed in future work are discussed.

Keywords: dispersed gas liquid multiphase flow; bubble induced turbulence; bubble coalecence and breakup; Euler Euler two fluid model; closure relations; CFD simulation

Involved research facilities

TOPFLOW Facility

Contribution to proceedings
15th International Topical Meeting on Nuclear Reactor Thermalhydraulics, NURETH-15, 12.-16.05.2013, Pisa, Italy
Poster
15th International Topical Meeting on Nuclear Reactor Thermalhydraulics, NURETH-15, 12.-16.05.2013, Pisa, Italy

Permalink: https://www.hzdr.de/publications/Publ-18861