Using CFD to investigate ventilation characteristics of vaults as wind-inducing devices in buildings

Omar S. Asfour; Mohamed B. Gadi

doi:10.1016/j.apenergy.2007.10.015

Using CFD to investigate ventilation characteristics of vaults as wind-inducing devices in buildings

Omar S. Asfour^*, Mohamed B. Gadi

^*Corresponding author for this work

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

39 Scopus citations

Abstract

This paper investigates the potential of the vaulted roofs for improving wind-induced natural ventilation, using computational fluid dynamics (CFD) three-dimensional modelling. This has been carried out in a parametric study considering different climatic and geometrical parameters. Using Fluent 5.5 program, natural ventilation performance has been modelled and assessed according to the value of airflow rate, and the quality of internal airflow distribution. It has been concluded that utilisation of vaulted roofs for natural ventilation increases inflow rate of the building, and re-distribute internal airflow currents by attracting some of the air to leave through roof openings instead of walls openings. This has improved ventilation conditions in the upstream and central zones of the building, but not in the downstream zone. Natural ventilation performance of two equivalent domed and vaulted roofs has also been compared. Results showed that there are many similarities between domed and vaulted roofs in terms of their natural ventilation performance. The advantage of any roof shape in air suction is highly dependant on wind direction.

Original language	English
Pages (from-to)	1126-1140
Number of pages	15
Journal	Applied Energy
Volume	85
Issue number	12
DOIs	https://doi.org/10.1016/j.apenergy.2007.10.015
State	Published - Dec 2008
Externally published	Yes

Bibliographical note

Funding Information:
No.U1404216), and by the Henan Provincial Key Scientific Research Project in 2017 (Grant No.17A480008), and by the Industry-Unievrsity-vPoirepensRnaeorcan ijacerctl s of H F uDre7partment of Science and Technology in 2017 (Grant No.172107000039), and by the Henan Provincial major F urs7cience and technology in 2018 (Grant No.182102210462 and 182102210467).

Funding Information:
Guangxi Science and Technology research project of tynoriMion ciatiof Guangxi elgesc olin “A Study on the Appl Traditional Culture in Modern Product Design”, Project No. KY2015YB407:KY2015YB407, Head of research project: Wang Yuxin.

Funding Information:
This paper is financially supported by 2018 Key Scientific and Technological Project of Henan Province (182102210442);2017 Open Found Project by Collaborative Innativoon CetnreofrviAation Economy Delveopmetn (k2017-2-4);Foundation for 2017 Youth Scholars of Zhengzhou University of Aeronautics(2017-06).

Funding Information:
Research Award of Minnan Normal University) under Grant (Number. SX14003); and The Chinese characteristic socialism theory system research center, Fujian Province, People Republic of China under Grant (Number. FJ2017B033); Fujian Education Bureau, Fujian Province, People Republic of China under Grant (Number. FJJKCGZ17-100).

Funding Information:
This work was supported by (the New Century Excellent

Funding Information:
Projects of the National Social Science Foundation of

Funding Information:
This work was supported by 2015GY056(Industrial research project of Science and Technology Department of Shaanxi Province),2017BJ-28(Shaanxi University of Science and Technology PhD Startup Fund Project), JG201602(The hGaaadrodnefuoratcurnjexaiteieo ct vnrEsPoUiRty S of Sciene aeccnhd Tnolog)y

Funding Information:
This paper is supported by The Scientific Research Project of JivPoinrlEdDciniuaetcapialoJirn(JitmaeeotH5nZK.ei.210 No .384), (the 12th five-year plan): Research about solid fuel machine of Compound ring mould biomass.

Funding Information:
Collaborative Researchof Optimal Design and Implementation of Wireless Sensor erttnniaonalhe Iy uppotrde tas bapesr his wn pde ttesnperi Scienec&echTnology CoopeartionProgarmof China under grant No. 2013DFA12460

Funding Information:
This paper is supported by Heilongjiang provincial philosophy and social science research and planning office: Under the background of ecological civilization, the mechanism of forest carbon sequestration for poverty alleviation in state-owned forest areas is studied. (Item number: 17JYD235)

Funding Information:
of Anhui Provincial under Grant No. 1608085MF143 and 1708085QF154, Anhui University Excellent Youth Talent Plan Project No.gxyq2017154; Natural Science Project of Anhui Education Department No.KJ2014A231 and NO.KJ2018A0398.

Keywords

CFD
Curved roofs
Natural ventilation
Vault

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering
General Energy
Management, Monitoring, Policy and Law

Access to Document

10.1016/j.apenergy.2007.10.015

Cite this

@article{333932c950f34ce2a56e85b7bee15756,

title = "Using CFD to investigate ventilation characteristics of vaults as wind-inducing devices in buildings",

abstract = "This paper investigates the potential of the vaulted roofs for improving wind-induced natural ventilation, using computational fluid dynamics (CFD) three-dimensional modelling. This has been carried out in a parametric study considering different climatic and geometrical parameters. Using Fluent 5.5 program, natural ventilation performance has been modelled and assessed according to the value of airflow rate, and the quality of internal airflow distribution. It has been concluded that utilisation of vaulted roofs for natural ventilation increases inflow rate of the building, and re-distribute internal airflow currents by attracting some of the air to leave through roof openings instead of walls openings. This has improved ventilation conditions in the upstream and central zones of the building, but not in the downstream zone. Natural ventilation performance of two equivalent domed and vaulted roofs has also been compared. Results showed that there are many similarities between domed and vaulted roofs in terms of their natural ventilation performance. The advantage of any roof shape in air suction is highly dependant on wind direction.",

keywords = "CFD, Curved roofs, Natural ventilation, Vault",

author = "Asfour, {Omar S.} and Gadi, {Mohamed B.}",

note = "Funding Information: No.U1404216), and by the Henan Provincial Key Scientific Research Project in 2017 (Grant No.17A480008), and by the Industry-Unievrsity-vPoirepensRnaeorcan ijacerctl s of H F uDre7partment of Science and Technology in 2017 (Grant No.172107000039), and by the Henan Provincial major F urs7cience and technology in 2018 (Grant No.182102210462 and 182102210467). Funding Information: Guangxi Science and Technology research project of tynoriMion ciatiof Guangxi elgesc olin “A Study on the Appl Traditional Culture in Modern Product Design”, Project No. KY2015YB407:KY2015YB407, Head of research project: Wang Yuxin. Funding Information: This paper is financially supported by 2018 Key Scientific and Technological Project of Henan Province (182102210442);2017 Open Found Project by Collaborative Innativoon CetnreofrviAation Economy Delveopmetn (k2017-2-4);Foundation for 2017 Youth Scholars of Zhengzhou University of Aeronautics(2017-06). Funding Information: Research Award of Minnan Normal University) under Grant (Number. SX14003); and The Chinese characteristic socialism theory system research center, Fujian Province, People Republic of China under Grant (Number. FJ2017B033); Fujian Education Bureau, Fujian Province, People Republic of China under Grant (Number. FJJKCGZ17-100). Funding Information: This work was supported by (the New Century Excellent Funding Information: Projects of the National Social Science Foundation of Funding Information: This work was supported by 2015GY056(Industrial research project of Science and Technology Department of Shaanxi Province),2017BJ-28(Shaanxi University of Science and Technology PhD Startup Fund Project), JG201602(The hGaaadrodnefuoratcurnjexaiteieo ct vnrEsPoUiRty S of Sciene aeccnhd Tnolog)y Funding Information: This paper is supported by The Scientific Research Project of JivPoinrlEdDciniuaetcapialoJirn(JitmaeeotH5nZK.ei.210 No .384), (the 12th five-year plan): Research about solid fuel machine of Compound ring mould biomass. Funding Information: Collaborative Researchof Optimal Design and Implementation of Wireless Sensor erttnniaonalhe Iy uppotrde tas bapesr his wn pde ttesnperi Scienec&echTnology CoopeartionProgarmof China under grant No. 2013DFA12460 Funding Information: This paper is supported by Heilongjiang provincial philosophy and social science research and planning office: Under the background of ecological civilization, the mechanism of forest carbon sequestration for poverty alleviation in state-owned forest areas is studied. (Item number: 17JYD235) Funding Information: of Anhui Provincial under Grant No. 1608085MF143 and 1708085QF154, Anhui University Excellent Youth Talent Plan Project No.gxyq2017154; Natural Science Project of Anhui Education Department No.KJ2014A231 and NO.KJ2018A0398.",

year = "2008",

month = dec,

doi = "10.1016/j.apenergy.2007.10.015",

language = "English",

volume = "85",

pages = "1126--1140",

journal = "Applied Energy",

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AU - Asfour, Omar S.

AU - Gadi, Mohamed B.

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PY - 2008/12

Y1 - 2008/12

N2 - This paper investigates the potential of the vaulted roofs for improving wind-induced natural ventilation, using computational fluid dynamics (CFD) three-dimensional modelling. This has been carried out in a parametric study considering different climatic and geometrical parameters. Using Fluent 5.5 program, natural ventilation performance has been modelled and assessed according to the value of airflow rate, and the quality of internal airflow distribution. It has been concluded that utilisation of vaulted roofs for natural ventilation increases inflow rate of the building, and re-distribute internal airflow currents by attracting some of the air to leave through roof openings instead of walls openings. This has improved ventilation conditions in the upstream and central zones of the building, but not in the downstream zone. Natural ventilation performance of two equivalent domed and vaulted roofs has also been compared. Results showed that there are many similarities between domed and vaulted roofs in terms of their natural ventilation performance. The advantage of any roof shape in air suction is highly dependant on wind direction.

AB - This paper investigates the potential of the vaulted roofs for improving wind-induced natural ventilation, using computational fluid dynamics (CFD) three-dimensional modelling. This has been carried out in a parametric study considering different climatic and geometrical parameters. Using Fluent 5.5 program, natural ventilation performance has been modelled and assessed according to the value of airflow rate, and the quality of internal airflow distribution. It has been concluded that utilisation of vaulted roofs for natural ventilation increases inflow rate of the building, and re-distribute internal airflow currents by attracting some of the air to leave through roof openings instead of walls openings. This has improved ventilation conditions in the upstream and central zones of the building, but not in the downstream zone. Natural ventilation performance of two equivalent domed and vaulted roofs has also been compared. Results showed that there are many similarities between domed and vaulted roofs in terms of their natural ventilation performance. The advantage of any roof shape in air suction is highly dependant on wind direction.

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ER -

Using CFD to investigate ventilation characteristics of vaults as wind-inducing devices in buildings

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this