Use of Advanced Techniques to Model the Dispersion of Chlorine in Complex Terrain

McBride, Mark; Reeves, A.B.; Vanderheyden, Marc; Lea, C.J.; Zhou, Xia

doi:10.1205/09575820151095175

Cited by 35 publications

(17 citation statements)

References 9 publications

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“…Numerical simulation of dense gas dispersions have been carried out in the past [4,5] using k-ε turbulence model with encouraging results. In this paper, k-ε in addition to three other newly developed turbulence models (k-ω, shear stress transport and SSG Reynolds) are tested against Thorney Island field trials data.…”

Section: Introductionmentioning

confidence: 98%

Validation of turbulence models in heavy gas dispersion over obstacles

Sklavounos

2004

Journal of Hazardous Materials

113

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Section: Introductionmentioning

confidence: 98%

Validation of turbulence models in heavy gas dispersion over obstacles

Sklavounos

2004

Journal of Hazardous Materials

113

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“…McBride et al (2001) simulated the dispersion of chlorine and found that complex terrain and buildings affected not only the downwind hazard range, but also the width of the dispersion cloud and its direction of travel. Chow et al (2009) proposed a model to simulate the atmospheric dispersion of CO 2 resulting from a leakage.…”

Section: Introductionmentioning

confidence: 99%

Computational fluid dynamics simulation of carbon dioxide dispersion in a complex environment

Liu

Lü

et al. 2016

Journal of Loss Prevention in the Process Industries

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“…For example the so-called "box-models" developed in the past (SLAB, DEGADIS) are widely used in risk analysis procedures [1,2]. Although they show satisfactory agreement with available field observations at several sites, including some with obstacles [3] these models would have problems in areas with large terrain obstacles especially when the irregular topography of the site plays an important role [4][5][6]. This is the case of toxic heavy cloud formation inside urban areas, as a result of sudden accidental releases from mobile containers, such as road tankers or railway tank cars.…”

Section: Introductionmentioning

confidence: 99%

“…CFD techniques were also used to model the release and mixing process of a dense gas within buildings using RANS [5,6,[21][22][23] and…”

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of dense cloud dispersion in urban areas by means of computational fluid dynamics

Scargiali

Grisafi

Busciglio

et al. 2011

Journal of Hazardous Materials

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a b s t r a c tThe formation of toxic heavy clouds as a result of sudden accidental releases from mobile containers, such as road tankers or railway tank cars, may occur inside urban areas so the problem arises of their consequences evaluation.Due to the semi-confined nature of the dispersion site simplified models may often be inappropriate.As an alternative, computational fluid dynamics (CFD) has the potential to provide realistic simulations even for geometrically complex scenarios since the heavy gas dispersion process is described by basic conservation equations with a reduced number of approximations.In the present work a commercial general purpose CFD code (CFX 4.4 by Ansys ® ) is employed for the simulation of dense cloud dispersion in urban areas. The simulation strategy proposed involves a stationary pre-release flow field simulation followed by a dynamic after-release flow and concentration field simulations.In order to try a generalization of results, the computational domain is modeled as a simple network of straight roads with regularly distributed blocks mimicking the buildings. Results show that the presence of buildings lower concentration maxima and enlarge the side spread of the cloud. Dispersion dynamics is also found to be strongly affected by the quantity of heavy-gas released.

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Use of Advanced Techniques to Model the Dispersion of Chlorine in Complex Terrain

Cited by 35 publications

References 9 publications

Validation of turbulence models in heavy gas dispersion over obstacles

Validation of turbulence models in heavy gas dispersion over obstacles

Computational fluid dynamics simulation of carbon dioxide dispersion in a complex environment

Modeling and simulation of dense cloud dispersion in urban areas by means of computational fluid dynamics

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