CFD MODELING OF THE AIR AND CONTAMINANT DISTRIBUTION IN ROOMS

被引：20

作者：

FAN, YC

机构：

来源：

ENERGY AND BUILDINGS | 1995年 / 23卷 / 01期

关键词：

COMPUTATIONAL FLUID DYNAMICS MODELING; AIR CONTAMINANTS; INDOOR ENVIRONMENT;

D O I：

10.1016/0378-7788(95)00916-L

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The k-epsilon model is a widely used model in engineering practice in handling indoor air quality problem. However, difficulties may arise when using the high Reynolds number k-epsilon model to simulate air flow patterns close to the boundaries of air and the stagnant component as well as the low air flow fluctuation elsewhere in a room. When using the k-epsilon model for low Reynolds number cases, the correlations between turbulent coefficients and turbulent Reynolds number must also be defined. By using the so-called Kolmogorov micro scale method, a new set of turbulent coefficient functions was deduced in this paper for the k-epsilon model in a case of low Reynolds number flow. Using the standard wall function leads to large differences between the measured and calculated heat transfer coefficient. A special wall function valid for a viscous sublayer, a buffer zone and a fully turbulent log-law zone is recommended in this paper. In addition, the modelling of air terminal devices in CFD simulations is summarized by using a literature collection.

引用

页码：33 / 39

页数：7

共 19 条

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