TY - GEN
T1 - Development and validation of a multifield model of churn-turbulent gas/liquid flows
AU - Tselishcheva, Elena A.
AU - Antal, Steven P.
AU - Podowski, Michael Z.
AU - Guillen, Donna Post
AU - Beyer, Matthias
AU - Lucas, Dirk
PY - 2009
Y1 - 2009
N2 - The accuracy of numerical predictions for gas/liquid two-phase flows using Computational Multiphase Fluid Dynamics (CMFD) methods strongly depends on the formulation of models governing the interaction between the continuous liquid field and bubbles of different sizes. The purpose of this paper is to develop, test and validate a multifield model of adiabatic gas/liquid flows at intermediate gas concentrations (e.g., churnturbulent flow regime), in which multiple-size bubbles are divided into a specified number of groups, each representing a prescribed range of sizes. The proposed modeling concept uses transport equations for the continuous liquid field and for each bubble field. The overall model has been implemented in the NPHASE-CMFD computer code. The results of NPHASE-CMFD simulations have been validated against the experimental data from the TOPFLOW test facility. Also, a parametric analysis on the effect of various modeling assumptions has been performed.
AB - The accuracy of numerical predictions for gas/liquid two-phase flows using Computational Multiphase Fluid Dynamics (CMFD) methods strongly depends on the formulation of models governing the interaction between the continuous liquid field and bubbles of different sizes. The purpose of this paper is to develop, test and validate a multifield model of adiabatic gas/liquid flows at intermediate gas concentrations (e.g., churnturbulent flow regime), in which multiple-size bubbles are divided into a specified number of groups, each representing a prescribed range of sizes. The proposed modeling concept uses transport equations for the continuous liquid field and for each bubble field. The overall model has been implemented in the NPHASE-CMFD computer code. The results of NPHASE-CMFD simulations have been validated against the experimental data from the TOPFLOW test facility. Also, a parametric analysis on the effect of various modeling assumptions has been performed.
UR - http://www.scopus.com/inward/record.url?scp=77952938449&partnerID=8YFLogxK
U2 - 10.1115/ICONE17-75210
DO - 10.1115/ICONE17-75210
M3 - Conference contribution
AN - SCOPUS:77952938449
SN - 9780791843550
T3 - International Conference on Nuclear Engineering, Proceedings, ICONE
SP - 317
EP - 326
BT - Proceedings of the 17th International Conference on Nuclear Engineering 2009, ICONE17
T2 - 17th International Conference on Nuclear Engineering, ICONE17
Y2 - 12 July 2009 through 16 July 2009
ER -