Wind tunnel study of plume dispersion with varying source emission configurations

Adrián R. Wittwer; Acir M. Loredo-Souza; Edith B.Camaño Schettini; Hugo G. Castro

doi:10.12989/was.2018.27.6.417

Wind tunnel study of plume dispersion with varying source emission configurations

Adrián R. Wittwer^*, Acir M. Loredo-Souza, Edith B.Camaño Schettini, Hugo G. Castro

^*Corresponding author for this work

Computer, Electrical and Mathematical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The concentration fields in the proximities of a local gas emission source are experimentally analyzed in several combinations of wind incidences and source emissions. These conditions are determined by the plume buoyancy, emission velocity and incident flow wind speed. Concentration measurements are performed by an aspirating probe in a boundary layer wind tunnel. The analysis included the mean concentration values and the intensity of concentration fluctuations in a neutral atmospheric boundary layer flow. Different configurations are tested: an isolated stack in a homogeneous terrain and a stack with a bluff body in close proximity, located windward and leeward from the emission source. The experimental mean concentration values are contrasted with Gaussian profiles and the dilution factor is analyzed with respect to the empirical curves of the minimum dilution Finally, a study on the plume intermittency is performed in a cross-sectional plane near the emission source. It is possible to highlight the following observations: a) plume vertical asymmetry in the case of an isolated emission source, b) significant differences in the dispersion process related to the relative location of the emission source and bluff body effects, and c) different probabilistic behavior of the concentration fluctuation data in a cross-sectional measurement plane inside the plume.

Original language	English (US)
Pages (from-to)	417-430
Number of pages	14
Journal	Wind and Structures, An International Journal
Volume	27
Issue number	6
DOIs	https://doi.org/10.12989/was.2018.27.6.417
State	Published - 2018

Bibliographical note

Funding Information:
The authors are grateful to CAPES, Brazil, for the financial support conceded. This research was partially funded by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brasil), Secretaríaa General de Ciencia y Técnica de la Universidad Nacional del Nordeste (SGCYT-UNNE, Argentina), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, Argentina) and Secretaría de Ciencia y Tecnología de la Universidad Tecnológica Nacional Facultad Regional Resistencia (UTN-FRRe, Argentina, Grant PID 4061TC (2016)). Also, the authors would like to acknowledge the financial support from the Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT, Argentina, Grant PICT 2015 IB CONICET 2739).

Publisher Copyright:
© 2018 Techno-Press, Ltd.

Keywords

Plume dispersion
Probabilistic analysis
Tracer gas
Wind tunnel modeling

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Modeling and Simulation

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10.12989/was.2018.27.6.417

Cite this

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title = "Wind tunnel study of plume dispersion with varying source emission configurations",

abstract = "The concentration fields in the proximities of a local gas emission source are experimentally analyzed in several combinations of wind incidences and source emissions. These conditions are determined by the plume buoyancy, emission velocity and incident flow wind speed. Concentration measurements are performed by an aspirating probe in a boundary layer wind tunnel. The analysis included the mean concentration values and the intensity of concentration fluctuations in a neutral atmospheric boundary layer flow. Different configurations are tested: an isolated stack in a homogeneous terrain and a stack with a bluff body in close proximity, located windward and leeward from the emission source. The experimental mean concentration values are contrasted with Gaussian profiles and the dilution factor is analyzed with respect to the empirical curves of the minimum dilution Finally, a study on the plume intermittency is performed in a cross-sectional plane near the emission source. It is possible to highlight the following observations: a) plume vertical asymmetry in the case of an isolated emission source, b) significant differences in the dispersion process related to the relative location of the emission source and bluff body effects, and c) different probabilistic behavior of the concentration fluctuation data in a cross-sectional measurement plane inside the plume.",

keywords = "Plume dispersion, Probabilistic analysis, Tracer gas, Wind tunnel modeling",

author = "Wittwer, {Adri{\'a}n R.} and Loredo-Souza, {Acir M.} and Schettini, {Edith B.Cama{\~n}o} and Castro, {Hugo G.}",

note = "Funding Information: The authors are grateful to CAPES, Brazil, for the financial support conceded. This research was partially funded by Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico (CNPq, Brasil), Secretar{\'i}aa General de Ciencia y T{\'e}cnica de la Universidad Nacional del Nordeste (SGCYT-UNNE, Argentina), Consejo Nacional de Investigaciones Cient{\'i}ficas y T{\'e}cnicas (CONICET, Argentina) and Secretar{\'i}a de Ciencia y Tecnolog{\'i}a de la Universidad Tecnol{\'o}gica Nacional Facultad Regional Resistencia (UTN-FRRe, Argentina, Grant PID 4061TC (2016)). Also, the authors would like to acknowledge the financial support from the Agencia Nacional de Promoci{\'o}n Cient{\'i}fica y Tecnol{\'o}gica (ANPCyT, Argentina, Grant PICT 2015 IB CONICET 2739). Publisher Copyright: {\textcopyright} 2018 Techno-Press, Ltd.",

year = "2018",

doi = "10.12989/was.2018.27.6.417",

language = "English (US)",

volume = "27",

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T1 - Wind tunnel study of plume dispersion with varying source emission configurations

AU - Wittwer, Adrián R.

AU - Loredo-Souza, Acir M.

AU - Schettini, Edith B.Camaño

AU - Castro, Hugo G.

N1 - Funding Information: The authors are grateful to CAPES, Brazil, for the financial support conceded. This research was partially funded by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brasil), Secretaríaa General de Ciencia y Técnica de la Universidad Nacional del Nordeste (SGCYT-UNNE, Argentina), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, Argentina) and Secretaría de Ciencia y Tecnología de la Universidad Tecnológica Nacional Facultad Regional Resistencia (UTN-FRRe, Argentina, Grant PID 4061TC (2016)). Also, the authors would like to acknowledge the financial support from the Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT, Argentina, Grant PICT 2015 IB CONICET 2739). Publisher Copyright: © 2018 Techno-Press, Ltd.

PY - 2018

Y1 - 2018

N2 - The concentration fields in the proximities of a local gas emission source are experimentally analyzed in several combinations of wind incidences and source emissions. These conditions are determined by the plume buoyancy, emission velocity and incident flow wind speed. Concentration measurements are performed by an aspirating probe in a boundary layer wind tunnel. The analysis included the mean concentration values and the intensity of concentration fluctuations in a neutral atmospheric boundary layer flow. Different configurations are tested: an isolated stack in a homogeneous terrain and a stack with a bluff body in close proximity, located windward and leeward from the emission source. The experimental mean concentration values are contrasted with Gaussian profiles and the dilution factor is analyzed with respect to the empirical curves of the minimum dilution Finally, a study on the plume intermittency is performed in a cross-sectional plane near the emission source. It is possible to highlight the following observations: a) plume vertical asymmetry in the case of an isolated emission source, b) significant differences in the dispersion process related to the relative location of the emission source and bluff body effects, and c) different probabilistic behavior of the concentration fluctuation data in a cross-sectional measurement plane inside the plume.

AB - The concentration fields in the proximities of a local gas emission source are experimentally analyzed in several combinations of wind incidences and source emissions. These conditions are determined by the plume buoyancy, emission velocity and incident flow wind speed. Concentration measurements are performed by an aspirating probe in a boundary layer wind tunnel. The analysis included the mean concentration values and the intensity of concentration fluctuations in a neutral atmospheric boundary layer flow. Different configurations are tested: an isolated stack in a homogeneous terrain and a stack with a bluff body in close proximity, located windward and leeward from the emission source. The experimental mean concentration values are contrasted with Gaussian profiles and the dilution factor is analyzed with respect to the empirical curves of the minimum dilution Finally, a study on the plume intermittency is performed in a cross-sectional plane near the emission source. It is possible to highlight the following observations: a) plume vertical asymmetry in the case of an isolated emission source, b) significant differences in the dispersion process related to the relative location of the emission source and bluff body effects, and c) different probabilistic behavior of the concentration fluctuation data in a cross-sectional measurement plane inside the plume.

KW - Plume dispersion

KW - Probabilistic analysis

KW - Tracer gas

KW - Wind tunnel modeling

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U2 - 10.12989/was.2018.27.6.417

DO - 10.12989/was.2018.27.6.417

M3 - Article

AN - SCOPUS:85062703843

SN - 1226-6116

VL - 27

SP - 417

EP - 430

JO - Wind and Structures, An International Journal

JF - Wind and Structures, An International Journal

IS - 6

ER -

Wind tunnel study of plume dispersion with varying source emission configurations

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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