Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
Modeling Bubbly-Cap Flows Using Two-Group Average Bubble Number Density
Yeoh, G. H.; Cheung, S.; Tu, J.; Krepper, E.; Lucas, D.
The basic concept of two-group average bubble number density equations along with three-fluid model has been demonstrated for vertical gas-liquid flow. Specifically, the current study focused on:
(i) classification of bubble interaction between spherical bubbles (Group-1) and cap bubbles (Group-2),
(ii) preliminary consideration of source and sink terms in the averaged bubble number density equations via the model of Hibiki and Ishii  and (iii) assessment by means of experimental data sets at bubbly-to-cap flow transition. Reasonable agreement was achieved between measured and predicted distributions of void fraction, interfacial area concentration (IAC) and volume equivalent bubble diameter.
Keywords: CFD; two-phase flow; bubble number density
Contribution to proceedings
The 14th International Topical Meeting on Nuclear Reactor Thermalhydraulics, NURETH-14, 25.-30.09.2011, Toronto, Canada
Proceedings of the 14th International Topical Meeting on Nuclear Reactor Thermalhydraulics (NURETH-14)