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Modeling of Turbulent Ventilation through an Opening due to Outdoor Pressure Fluctuations  

Han, Hwa-Taik (School of Mechanical and Automotive Engineering, Kookmin University)
Yom, Chol-Min (Department of Mechanical Engineering, Kookmin University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.20, no.2, 2008 , pp. 121-127 More about this Journal
Abstract
This paper investigates the effects of outdoor pressure fluctuations on natural ventilation through an opening on a building envelope. The ventilation airflow rate depends on the magnitude and the period of the pressure fluctuations, the size of the opening relative to the space volume, and the resistance characteristics of the opening. Non-dimensional parameters have been derived, which determine indoor pressure responses due to outdoor pressure fluctuations. The flow regions are categorized into (1) synchronized region, (2) opening resistance region, and (3) transition region depending on the non-dimensional parameter derived. Pressure fluctuations and flow characteristics are investigated numerically using the 4th order Runge-Kutta method.
Keywords
Ventilation; Pressure fluctuation; Natural ventilation; Period; Opening;
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1 Warren, P. P., 1977, Ventilation through openings on one wall only, int. Congress on heat and mass transfer in buildings, dubrovnik, yugoslavia. In : energy conservation in heating, Cooling and Ventilating Buildings, Vol. 1, eds. C. J. Hoogendoorn and N. H. Afgar, Hemisphere, Washington D. C., pp. 189-209
2 Etheridge, D. and Sandberg, M., 1996, Building ventilation : theory and Measurement, John Wiley & Sons, Chichester
3 Etheridge, D., 2000, Unsteady flow effects due to fluctuation wind pressures in natural ventilation design-instantaneous flow rates, Building and Environment, Vol. 35, pp. 321-337   DOI   ScienceOn
4 Malinowski, H. K., 1971, Wind effect on the air movement inside buildings, Proc. 3rd Int. Conf. on Wind Effects on Buildings and Structures, Tokyo, Japan, pp. 125-134
5 Fürbringer, J. M. and Van Der Maas, J., 1995, Suitable algorithms for calculation air renewal rate by pulsation air flow through a single large opening, Building and Environment, Vol. 30, pp. 493-503   DOI   ScienceOn
6 Card, W. H., Sallman, A., Graham, R. W. and Drucker, E. E., 1978, Air leakage measurement of buildings by an infrasonic method, Syracuse University, Technical Report TR-78-1
7 Cockcroft, J. P. and Robertson, P., 1976, Ventilation of an enclosure through a single opening, Building Environment, Vol. 11, No. 1, pp. 29-35   DOI   ScienceOn
8 Harris-Bass, J., Kavarana, B. and Lawrence, P., 1974, Adventions ventilation of houses. Proc. Symp. on Ventilation of Housing, Research by British Gas, Paper 2