Comparative study of wall-force models for the simulation of bubbly flows

被引：53
作者：
Rzehak, Roland [1 ]
Krepper, Eckhard [1 ]
Lifante, Conxita [2 ]
机构：
[1] Helmholtz Zentrum Dresden Rossendorf, Inst Fluid Dynam, D-01314 Dresden, Germany
[2] ANSYS Germany GmbH, D-83624 Otterfing, Germany
来源：
NUCLEAR ENGINEERING AND DESIGN | 2012年 / 253卷
关键词：
TRANSVERSE MIGRATION; SINGLE BUBBLES; LIFT;
D O I：
10.1016/j.nucengdes.2012.07.009
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
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. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：41 / 49
页数：9
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