Buoyancy-driven single-sided natural ventilation in buildings with large openings

被引：143

作者：

Jiang, Y

Chen, QY

机构：

[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

[2] MIT, Bldg Technol Program, Cambridge, MA 02139 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2003年 / 46卷 / 06期

基金：

美国国家科学基金会;

关键词：

computational fluid dynamics; large eddy simulation; Reynolds averaged Navier-Stokes equation modeling; experimental measurements; buoyancy-driven; single-sided natural ventilation;

D O I：

10.1016/S0017-9310(02)00373-3

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Full-scale experimental and computational fluid dynamics (CFD) methods were used to investigate buoyancy-driven single-sided natural ventilation with large openings. Detailed airflow characteristics inside and outside of the room and the ventilation rate were measured. The experimental data were used to validate two CFD models: Reynolds averaged Navier-Stokes equation (RANS) modeling and large eddy simulation (LES). LES provides better results than the RANS modeling. With LES, the mechanism of single-sided ventilation was examined by turbulence statistical analysis. It is found that most energy is contained in low-frequency regions, and mean flow fields play an important role. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：973 / 988

页数：16

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