Analysis of Wind Speed and Wind Pressure on the Facades in Frequency Domain for the Modelling of Air Change Rate
Paper in proceeding, 2020

Air exchange in buildings is driven by pressure difference across the building envelope caused by wind and difference in density between external and internal air. The evaluation of the influence of wind on the air change rate is usually limited to the analysis of the hourly mean wind speed. Wind is a random phenomenon characterized by the broad energy spectrum. The high frequency part can be responsible for the oscillation of the air through the openings resulting in the increased air exchange. Wind pressure coefficient on the leeward site mostly depends on the form characteristics of the object in relation to wind direction. The analysis of wind speed and wind pressure on the facades in frequency domain can deliver interesting data to air change rate model. Some of the results of continuous measurements carried out on a single-family house for 8 months are presented in frequency domain. The statistics of wind speed, wind direction and pressure differences across the 6 building components are calculated. The wind turbulence and the pressure fluctuations on the facades and the roof of the building are being investigated using energy spectra of their signals. Farther analysis of the experimental results is needed to be able to include high frequency wind in the infiltration model.





wind effects



Krystyna Pietrzyk

Chalmers, Architecture and Civil Engineering, Building Design

E3S Web of Conferences

25550403 (ISSN) 22671242 (eISSN)

Vol. 172 09005

12th Nordic Symposium on Building Physics, NSB 2020
Tallinn, Estonia,

Analysis of wind simulations to support building/urban design – Virtual Göteborg

Adlerbertska Foundations, 2018-08-22 -- 2019-12-29.

Subject Categories

Architectural Engineering

Fluid Mechanics and Acoustics

Building Technologies



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