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

页码：41 / 49

页数：9

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