Numerical simulation of trans-critical carbon dioxide (R744) flow through short tube orifices

被引：8
|
作者：
García-Valladares, O [1 ]
机构：
[1] Univ Nacl Autonoma Mexico, Ctr Invest Energia, Temixco 62580, Morelos, Mexico
来源：
APPLIED THERMAL ENGINEERING | 2006年 / 26卷 / 2-3期
关键词：
short tube orifices; orifices; R744; CO2; carbon dioxide; two-phase flow; numerical simulation;
D O I：
10.1016/j.applthermaleng.2005.06.003
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A detailed one-dimensional numerical simulation of the fluid-dynamic behaviour of short tube orifices expansion devices working with trans-critical carbon dioxide (CO2 or R744) has been developed. The discretized governing equations are coupled using an implicit step by step method. A special treatment has been implemented in order to consider transitions (subcooled liquid region and equilibrium two-phase region). The numerical model allows analysis of aspects such as geometry, different working conditions, critical or non-critical flow conditions, etc. Comparison of the numerical simulation with experimental data presented in the technical literature will be shown in the present article. 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：144 / 151
页数：8
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