Indoor-outdoor pollutant transport through a hollow cube with a cross-ventilating flow
Indoor-outdoor pollutant transport through a hollow cube with a cross-ventilating flow
Cross-ventilation plays a critical role in dispersing indoor pollutants by promoting the exchange of indoor and outdoor air. To investigate pollutant transport in such scenarios, we experimentally investigate the flow through a hollow cube immersed in an atmospheric boundary layer as an idealized representation, with a ground-level passive scalar (pollutant) source placed at the centre of the building. The focus is on characterizing the velocity and concentration fields to understand the scalar transport mechanisms within and outside the cube. Two different experiments are conducted comparing results from the University of Surrey EnFlo wind tunnel and the University of Southampton water tunnel. The wind tunnel experiments used a laser Doppler anemometer (LDA) and a Fast flame ionization detector (FFID) to collect point measurements of the velocity and concentration, respectively. The water tunnel experiments used Planar Laser-Induced Fluorescence (PLIF) and Particle Image Velocimetry (PIV) to obtain simultaneous measurements of scalar and flow fields. The insights gained from this study can potentially improve our understanding and help model pollutant exchange between indoor and outdoor environments, especially in complex atmospheric boundary layer conditions
Pollutant dispersion, urban aerodynamics, wind engineering
Biswas, Subhajit
66f05b88-e89e-45e0-a29e-f5fb7839527f
Carpentieri, Matteo
07cb3abe-34e2-422d-8728-23734c3ec17e
Vanderwel, Christina
fbc030f0-1822-4c3f-8e90-87f3cd8372bb
17 June 2025
Biswas, Subhajit
66f05b88-e89e-45e0-a29e-f5fb7839527f
Carpentieri, Matteo
07cb3abe-34e2-422d-8728-23734c3ec17e
Vanderwel, Christina
fbc030f0-1822-4c3f-8e90-87f3cd8372bb
Biswas, Subhajit, Carpentieri, Matteo and Vanderwel, Christina
(2025)
Indoor-outdoor pollutant transport through a hollow cube with a cross-ventilating flow.
9th European African Conference on Wind Engineering, , Trondheim, Norway.
17 - 19 Jun 2025.
4 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Cross-ventilation plays a critical role in dispersing indoor pollutants by promoting the exchange of indoor and outdoor air. To investigate pollutant transport in such scenarios, we experimentally investigate the flow through a hollow cube immersed in an atmospheric boundary layer as an idealized representation, with a ground-level passive scalar (pollutant) source placed at the centre of the building. The focus is on characterizing the velocity and concentration fields to understand the scalar transport mechanisms within and outside the cube. Two different experiments are conducted comparing results from the University of Surrey EnFlo wind tunnel and the University of Southampton water tunnel. The wind tunnel experiments used a laser Doppler anemometer (LDA) and a Fast flame ionization detector (FFID) to collect point measurements of the velocity and concentration, respectively. The water tunnel experiments used Planar Laser-Induced Fluorescence (PLIF) and Particle Image Velocimetry (PIV) to obtain simultaneous measurements of scalar and flow fields. The insights gained from this study can potentially improve our understanding and help model pollutant exchange between indoor and outdoor environments, especially in complex atmospheric boundary layer conditions
Text
Biswas_EACWE2025
- Accepted Manuscript
More information
Published date: 17 June 2025
Venue - Dates:
9th European African Conference on Wind Engineering, , Trondheim, Norway, 2025-06-17 - 2025-06-19
Keywords:
Pollutant dispersion, urban aerodynamics, wind engineering
Identifiers
Local EPrints ID: 503609
URI: http://eprints.soton.ac.uk/id/eprint/503609
PURE UUID: fbebdcce-1d13-4b4a-8db2-c716e4317ddd
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Date deposited: 07 Aug 2025 16:32
Last modified: 22 Aug 2025 02:39
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Contributors
Author:
Subhajit Biswas
Author:
Matteo Carpentieri
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