会议专题

NUMERICAL SIMULATION AND EXPERIMENTAL STUDY ON THERMAL STRATIFICATION PHENOMENON IN LARGE SPACE BUILDING

In winter, supply warm air is often needed to raise indoor temperature; and sidewall air supply and sidewall return is usually used. In this paper, the laws of thermal stratification with sidewall air supply and sidewall return airflow in the air-conditioned room are mainly studied. Some important factors influencing thermal stratification were analyzed, including air supply inlet height, air supply angle and so on.In this paper, effects of sidewall air supply on temperature gradient distribution are researched and analyzed using FFSV3.0 package. Large eddy simulation (LES) and Lam and Bremhorst (LB) model were used to study the mechanism of hot air delaminating.Also an experimental study on sidewall air supply airflow is carried out in the normal airflow room, whose size is about 3m×3m×3m. In the experiment, hot-wire anemometer (IFA300), TSI Model 1128, KL2000 intelligent temperature and humidity tour inspection system were used to provide accurate and detailed velocity and temperature data. The LES results are in good agreement with the experimental data. This is considered to establish confidence in applying LES methods to the calculation of hot air delaminating in large space buildings.

H.Q.WANG Z.Y.WANG C.R.LIU G.X.KOU

School of Energy Science and Engineering, Central South University Changsha, P. R. of China, 410083 School of Civil Engineering, Hunan University of Technology Zhuzhou, P. R. of China, 412008

国际会议

The 22nd International Congress of Refrigeration(第22届国际制冷大会)

北京

英文

2007-08-21(万方平台首次上网日期,不代表论文的发表时间)