[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()

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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

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

Keywords:

computational fluid dynamics;  air terminal device model;  jet main region specification model;  indoor air movement

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.

References:

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[3] Bartak M, Beausoleil-Morrison I, Clarke J A, et al.Integrating CFD and building simulation [J].Building and Environment, 2002, 37(8/9):865-871.
[4] Nielsen P V.The box method—a practical procedure for introduction of an ATD in CFD calculation [D].Aalborg, Denmark:Aalborg University, 1997.
[5] Chen Q, Moser A.Simulation of a multiple nozzle diffuser [C]//Proceedings of the 12th AIVC Conference.Ottawa, Canada, 1991:1-14.
[6] Huo Y, Zhang J S, Shawe C, et al.A new method to specify the diffuser boundary conditions in CFD simulation [C]//Proceedings of the 5th International Conference on Air Distribution in Rooms.Yokohama, Japan, 1996:232-240.
[7] Huo Y, Haghighat F, Zhang J S, et al.A systematic approach to describe the ATD in CFD simulation for room air distribution analysis [J].Building and Environment, 2000, 35(6):563-576.

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.

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