CUED Publications database

Impact of aperture separation on wind-driven single-sided natural ventilation

Daish, NC and Carrilho da Graça, G and Linden, PF and Banks, D (2016) Impact of aperture separation on wind-driven single-sided natural ventilation. Building and Environment, 108. pp. 122-134.

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Abstract

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.

Item Type: Article
Uncontrolled Keywords: wind-driven natural ventilation single-sided wind tunnel
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:35
Last Modified: 07 Sep 2017 01:44
DOI: