Numerical Predictions of Bubbly Two-Phase Flows with Openfoam
NURETH-14 - 2011 September 25-30


Presented at:
NURETH-14
2011 September 25-30
Location:
Toronto, Canada
Session Title:
A2-1 Multifield Two-Phase Flow and Flow Regimes Identification and

Authors:
Edouard Michta (KTH)
Kai Fu (KTH)
Henryk Anglart (Royal Institute of Technology)
Kristian Angele (Vattenfall R&D, Sweden)
  

Abstract

A new model for simulation of bubbly two-phase flows has been developed and implemented into

an open-source Computational Fluid Dynamics (CFD) code OpenFOAM. The model employs the

two-fluid framework with closure relationships for the interfacial momentum transfer. The bubble

size is calculated based on the solution of the interfacial area concentration equations. The

predictions are validated against a wide range of experimental data containing measured void

fraction, the phasic velocity and the interfacial area concentration. The new model demonstrates the

ability to capture the wall peaking of void fraction for small bubbles. The predicted levels of void

fraction and phasic velocities are in good agreement with measured data.

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