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[1] Wang Zhigang, Zhang Yufeng, Sun Yuexia, et al. Application of jet main region specification modelin CFD simulation for room air movement analysis [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 283-286. [doi:10.3969/j.issn.1003-7985.2010.02.031]
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Application of jet main region specification modelin CFD simulation for room air movement analysis()
主流区风口模型在室内气流CFD模拟中的应用
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
26
Issue:
2010 2
Page:
283-286
Research Field:
Energy and Power Engineering
Publishing date:
2010-06-30

Info

Title:
Application of jet main region specification modelin CFD simulation for room air movement analysis
主流区风口模型在室内气流CFD模拟中的应用
Author(s):
Wang Zhigang1;  2;  Zhang Yufeng1;  Sun Yuexia3
1 School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
2 Tianjin Municipal Engineering Design and Research Institute, Tianjin 300051, China
3 Texas Institute of Allergy, Indoor Environment and Energy, University of Texas at Tyler, Tyler 75799, TX, USA
王志刚1;  2;  张于峰1;  孙越霞3
1 天津大学环境科学与工程学院, 天津 300072; 2 天津市市政工程设计研究院, 天津 300051; 3Texas Institute of Allergy, Indoor Environment and Energy, University of Texas at Tyler, Tyler 75799, TX, USA
Keywords:
computational fluid dynamics;  air terminal device model;  jet main region specification model;  indoor air movement
计算流体动力学;  风口模型;  主流区风口模型;  室内气流
PACS:
TU83
DOI:
10.3969/j.issn.1003-7985.2010.02.031
Abstract:
This paper analyzes the applications of four air terminal device(ATD)models(i.e., the basic model, the box model, the N-point momentum model, the jet main region specification model)in computational fluid dynamics(CFD)simulation and their performance in case study.A full-scale experiment is performed in an environment chamber, and the measured air velocity and temperature fields are compared with the simulation results by using four ATD models.The velocity and temperature fields are measured by an omni-directional thermo-anemometer system.It demonstrates that the basic model and the box model are not applicable to complicated air terminal devices.At the occupant area, the relative errors between simulated and measured air velocities are less than 20% based on the N-point momentum model and the jet main region specification model.Around the ATD zone, the relative error between the numerical and measured air velocity based on the jet main region specification model is less than 15%.The jet main region specification model is proved to be an applicable approach and a more accurate way to study the airflow pattern around the ATD with complicated geometry.
分析了4类风口模型(即基本模型、盒子模型、N点动量模型、主流区风口模型)在计算流体动力学中的应用以及在实际工程案例中的运行情况.在环境舱内进行了足尺实验, 利用全方位热风速表测量了环境舱内的气流速度和温度场, 并与4类风口模型的模拟结果进行比较.结果表明:基本模型与盒子模型并不适用于结构复杂的送风口模拟;基于N点动量模型和主流区风口模型的流体速度在工作区的模拟值与实测值的相对误差小于20%;在主流区风口模型中, 送风口附近的气体速度模拟值与实测值的最大相对误差小于15%.证明主流区风口模型相对于其他3类风口模型而言, 对于结构复杂的送风口模拟更准确, 应用性更强.

References:

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Memo

Memo:
Biographies: Wang Zhigang(1978—), male, graduate;Zhang Yufeng(corresponding author), male, doctor, professor, yufengfa@tju.edu.cn.
Citation: Wang Zhigang, Zhang Yufeng, Sun Yuexia.Application of jet main region specification model in CFD simulation for room air movement analysis[J].Journal of Southeast University(English Edition), 2010, 26(2):283-286.
Last Update: 2010-06-20