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Numerical investigation into the structure of scalar plumes in a simple room

Numerical investigation into the structure of scalar plumes in a simple room
Numerical investigation into the structure of scalar plumes in a simple room
Indoor airflow can be complex due to large regions with no dominant flow direction and low velocities. An airborne material released from a surface indoors would be expected to result in a high degree of variability inconcentration. It is currently not known how the spatially and temporally resolved concentration field from this type of source could be exploited for the detection of contaminants or vapour from concealed materials. Previous experimental and numerical work has provided information on flow and passive scalar transport in indoor environments but little on how different detection/search strategies could be employed in these environments. This work used large-eddy simulation to extensively study the turbulence fluctuations and the instantaneous vapour field in a widely studied, iso-thermal, benchmark test room, considering the effects of the source size and location. The work provides insight into vapour behaviour within indoor spaces and can have application to fields such as vapour detection, source localisation using autonomous systems, or exposure to toxic chemicals. As an example, we have interpreted the results in terms of current theories of chemical location by animals and the capability of detection dogs.
computational fluid dynamics, dispersion, large-eddy simulation, vapour detection, explosives, dog
0167-6105
252-263
Foat, T.G.
eddebff8-0a58-4a9a-a2ec-45563e965245
Parker, S.T.
ff55386a-2a0b-4af2-81dd-b8674e9be344
Castro, I.P.
66e6330d-d93a-439a-a69b-e061e660de61
Xie, Z.-T.
98ced75d-5617-4c2d-b20f-7038c54f4ff0
Foat, T.G.
eddebff8-0a58-4a9a-a2ec-45563e965245
Parker, S.T.
ff55386a-2a0b-4af2-81dd-b8674e9be344
Castro, I.P.
66e6330d-d93a-439a-a69b-e061e660de61
Xie, Z.-T.
98ced75d-5617-4c2d-b20f-7038c54f4ff0

Foat, T.G., Parker, S.T., Castro, I.P. and Xie, Z.-T. (2018) Numerical investigation into the structure of scalar plumes in a simple room. Journal of Wind Engineering and Industrial Aerodynamics, 175, 252-263. (doi:10.1016/j.jweia.2018.01.031).

Record type: Article

Abstract

Indoor airflow can be complex due to large regions with no dominant flow direction and low velocities. An airborne material released from a surface indoors would be expected to result in a high degree of variability inconcentration. It is currently not known how the spatially and temporally resolved concentration field from this type of source could be exploited for the detection of contaminants or vapour from concealed materials. Previous experimental and numerical work has provided information on flow and passive scalar transport in indoor environments but little on how different detection/search strategies could be employed in these environments. This work used large-eddy simulation to extensively study the turbulence fluctuations and the instantaneous vapour field in a widely studied, iso-thermal, benchmark test room, considering the effects of the source size and location. The work provides insight into vapour behaviour within indoor spaces and can have application to fields such as vapour detection, source localisation using autonomous systems, or exposure to toxic chemicals. As an example, we have interpreted the results in terms of current theories of chemical location by animals and the capability of detection dogs.

Text
VapourPlumeIndoors-JWEIA-revisedAgain - Accepted Manuscript
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More information

Accepted/In Press date: 17 January 2018
e-pub ahead of print date: 21 February 2018
Published date: April 2018
Keywords: computational fluid dynamics, dispersion, large-eddy simulation, vapour detection, explosives, dog

Identifiers

Local EPrints ID: 417792
URI: http://eprints.soton.ac.uk/id/eprint/417792
ISSN: 0167-6105
PURE UUID: 67b34123-e973-49d0-b241-ef598c39b3b0
ORCID for T.G. Foat: ORCID iD orcid.org/0000-0001-7514-9385
ORCID for Z.-T. Xie: ORCID iD orcid.org/0000-0002-8119-7532

Catalogue record

Date deposited: 14 Feb 2018 17:30
Last modified: 07 Oct 2020 06:08

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