Real time airflow simulation in buildings

Wangda Zuo, Qingyan Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Real time flow simulation is crucial in emergency management in buildings, such as fire or accidental release of chemical/biological agents. Proper measures can be taken to minimize casualties with correct and timely prediction of the spread of the fire or contaminants. Although the traditional CFD simulation in buildings is accurate, it is too time consuming. Multizone flow modeling is fast, but its accuracy is poor. Therefore, it is very necessary to develop a new method that is faster than the traditional CFD, but more accurate than the muitizone modeling. Recently, the modified semi-Lagrangian method based on Navier-Stokes equation has been used for flow simulation. This method is unconditionally stable and can use a larger time step than traditional CFD. The method has been successfully used in computer game industry and in computer graphic science. However, the results are only virtually real and are not rigorously validated. This investigation used the method to systematically study three basic flows in buildings and compared the numerical results with the corresponding experimental data or direct numerical simulation data from the literature. The results conclude that it is possible to conduct flow simulations faster than real time by using the method, although some discrepancies exist between the numerical results and the data.

Original languageEnglish (US)
Title of host publicationIAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings
Subtitle of host publicationSustainable Built Environment
Pages459-466
Number of pages8
StatePublished - Dec 1 2007
Event6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007 - Sendai, Japan
Duration: Oct 28 2007Oct 31 2007

Publication series

NameIAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment
Volume2

Other

Other6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007
CountryJapan
CitySendai
Period10/28/0710/31/07

Keywords

  • CFD
  • Fast fluid dynamics
  • Real time
  • Semi-Lagrangian method

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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  • Cite this

    Zuo, W., & Chen, Q. (2007). Real time airflow simulation in buildings. In IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment (pp. 459-466). (IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment; Vol. 2).