Numerical simulation of hydrogen dispersion in the vicinity of a cubical building in stable stratified atmospheres

Héctor A. Olvera; Ahsan R. Choudhuri

doi:10.1016/j.ijhydene.2006.02.022

Numerical simulation of hydrogen dispersion in the vicinity of a cubical building in stable stratified atmospheres

Héctor A. Olvera, Ahsan R. Choudhuri

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

61 Scopus citations

Abstract

A computational fluid dynamics (CFD) approach using the standard k - ε{lunate} turbulence model was applied to simulate hydrogen and methane dispersion around a cubical building. Model results were compared against towing-tank data and other numerical results. The relative impact between hydrogen and methane releases on the building and its surroundings under several stable atmospheric stratifications was assessed. The computed dispersion patterns show a greater risk potential of hydrogen in comparison to methane when released in the vicinity of a building. However, since hydrogen rapidly rises, the impact of a release on the surrounding buildings promptly diminishes. The results also depict complex interactions of hydrogen dispersion patterns due to strong buoyant forces.

Original language	English (US)
Pages (from-to)	2356-2369
Number of pages	14
Journal	International Journal of Hydrogen Energy
Volume	31
Issue number	15
DOIs	https://doi.org/10.1016/j.ijhydene.2006.02.022
State	Published - Dec 2006
Externally published	Yes

Keywords

Atmospheric dispersion
CFD
Impact assessment
Micro-scale
k - ε{lunate} turbulence model

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

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10.1016/j.ijhydene.2006.02.022

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title = "Numerical simulation of hydrogen dispersion in the vicinity of a cubical building in stable stratified atmospheres",

abstract = "A computational fluid dynamics (CFD) approach using the standard k - ε{lunate} turbulence model was applied to simulate hydrogen and methane dispersion around a cubical building. Model results were compared against towing-tank data and other numerical results. The relative impact between hydrogen and methane releases on the building and its surroundings under several stable atmospheric stratifications was assessed. The computed dispersion patterns show a greater risk potential of hydrogen in comparison to methane when released in the vicinity of a building. However, since hydrogen rapidly rises, the impact of a release on the surrounding buildings promptly diminishes. The results also depict complex interactions of hydrogen dispersion patterns due to strong buoyant forces.",

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T1 - Numerical simulation of hydrogen dispersion in the vicinity of a cubical building in stable stratified atmospheres

AU - Olvera, Héctor A.

AU - Choudhuri, Ahsan R.

PY - 2006/12

Y1 - 2006/12

N2 - A computational fluid dynamics (CFD) approach using the standard k - ε{lunate} turbulence model was applied to simulate hydrogen and methane dispersion around a cubical building. Model results were compared against towing-tank data and other numerical results. The relative impact between hydrogen and methane releases on the building and its surroundings under several stable atmospheric stratifications was assessed. The computed dispersion patterns show a greater risk potential of hydrogen in comparison to methane when released in the vicinity of a building. However, since hydrogen rapidly rises, the impact of a release on the surrounding buildings promptly diminishes. The results also depict complex interactions of hydrogen dispersion patterns due to strong buoyant forces.

AB - A computational fluid dynamics (CFD) approach using the standard k - ε{lunate} turbulence model was applied to simulate hydrogen and methane dispersion around a cubical building. Model results were compared against towing-tank data and other numerical results. The relative impact between hydrogen and methane releases on the building and its surroundings under several stable atmospheric stratifications was assessed. The computed dispersion patterns show a greater risk potential of hydrogen in comparison to methane when released in the vicinity of a building. However, since hydrogen rapidly rises, the impact of a release on the surrounding buildings promptly diminishes. The results also depict complex interactions of hydrogen dispersion patterns due to strong buoyant forces.

KW - Atmospheric dispersion

KW - CFD

KW - Impact assessment

KW - Micro-scale

KW - k - ε{lunate} turbulence model

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JF - International Journal of Hydrogen Energy

IS - 15

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Numerical simulation of hydrogen dispersion in the vicinity of a cubical building in stable stratified atmospheres

Abstract

Keywords

ASJC Scopus subject areas

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