Impact of aperture separation on wind-driven single-sided natural ventilation
Building and Environment
MetadataShow full item record
Daish, N., Carrilho da Graça, G., Linden, P., & Banks, D. (2016). Impact of aperture separation on wind-driven single-sided natural ventilation. Building and Environment, 108 122-134. https://doi.org/10.1016/j.buildenv.2016.08.015
This paper presents a study of the impact of horizontal aperture separation in single-sided ventilation flows with two apertures (SS2). The study is based on wind tunnel measurements and dimensional analysis. The results show that the SS2 ventilation flow rate, scaled with incoming wind velocity and aperture area, depends on the incoming wind angle relative to the aperture façade, $θ$, and on the aperture separation scaled by building width, $s$′. For most wind angles, the ventilation flow increases as the square-root of $s$′. This study also identified a novel flow driving mechanism – vortex shedding: when the ventilation openings are on the leeward side of the building and the wind is nearly head-on, the flow is driven by a pumping mechanism due to vortex shedding.
wind-driven, natural ventilation, single-sided, wind tunnel
The authors gratefully acknowledge the contribution of staff at CPP Wind Engineering, Inc., for running the wind tunnel tests that produced the data used to develop our model; and financial support for one of us (GCG) from Instituto Dom Luiz (UID/GEO/50019/ 2013). The work described in this paper was carried out under California Energy Commission contract 500-10-025, and their financial support is gratefully acknowledged.
External DOI: https://doi.org/10.1016/j.buildenv.2016.08.015
This record's URL: https://www.repository.cam.ac.uk/handle/1810/264177
Attribution-NonCommercial-NoDerivatives 4.0 International, Attribution-NonCommercial-NoDerivatives 4.0 International, Attribution-NonCommercial-NoDerivatives 4.0 International, Attribution-NonCommercial-NoDerivatives 4.0 International