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THE INFLUENCE OF TURBULENT WIND ON AIR CHANGE RATES: A MODELLING APPROACH.

Author(s) : HAGHIGHAT F.

Type of article: Article

Summary

THE AIR FLOWS ARE INFLUENCED BY THE BUILDING CHARACTERISTICS, THE RESISTANCE OF THE OPENINGS TO FLOW, THE INERTIA OF THE AIR MASS IN THE OPENINGS AND THE COMPRESSIBILITY OF ROOM AIR, AND BY FREQUENCY CHARACTERISTICS OF WIND PRESSURES, THEIR POWER SPECTRA AND THE CORRELATION AMONG THEM. PROPOSES A NEW APPROACH USING THE SPECTRUM ANALYSIS TECHNIQUE TO MODEL THE PULSATING FLOWS THROUGH OPENINGS OF A BUILDING. THE GOVERNING EQUATIONS FOR FLUCTUATING AIRFLOW BEHAVIOUR ARE OBTAINED FROM THE PRESSURE-FORCE BALANCE BETWEEN THE TURBULENCE PRESSURE DIFFERENCES ACROSS OPENINGS AND THE FORCES REQUIRED TO OVERCOME THE FLOW RESISTANCE AND INERTIA OF AIR. APPLIES THE PROPOSED APPROACH TO A SINGLE-ZONE ENCLOSURE WITH SINGLE OPENING AND WITH 2 OPENINGS. STATES IT CAN EASILY BE EXTENDED TO MULTI-ZONE BUILDINGS.

Details

  • Original title: THE INFLUENCE OF TURBULENT WIND ON AIR CHANGE RATES: A MODELLING APPROACH.
  • Record ID : 1992-0712
  • Languages: English
  • Source: Build. Environ. - vol. 26 - n. 2
  • Publication date: 1991
  • Document available for consultation in the library of the IIR headquarters only.

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