Derivation of a well-posed and multidimensional drift-flux model for boiling flows

被引：3

作者：

Grégoire, O ^{[1
]}

Martin, M ^{[1
]}

机构：

[1] CEA Saclay, F-91191 Gif Sur Yvette, France

来源：

COMPTES RENDUS MECANIQUE | 2005年 / 333卷 / 06期

关键词：

computational fluid mechanics; boiling two-phase flows; drift-flux model; multidimensional; void fraction;

D O I：

10.1016/j.crme.2005.05.002

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this Note, we derive a multidimensional drift-flux model for boiling flows. Within this framework, the distribution parameter is no longer a scalar but a tensor that might account for the medium anisotropy and the flow regime. A new model for the drift-velocity vector is also derived. It intrinsically takes into account the effect of the friction pressure loss on the buoyancy force. On the other hand, we show that most drift-flux models might exhibit a singularity for large void fraction. In order to avoid this singularity, a remedy based on a simplified three field approach is proposed. (c) 2005 Academie des sciences. Published by Elsevier SAS. All rights reserved.

引用

页码：459 / 466

页数：8