Influence of scenario choices when performing CFD simulations for explosion risk analyses: Focus on dispersion

Azzi, Camille; Rogstadkjernet, Lars; Wingerden, Kees van; Choi, Jeawoong; Ryu, Yonghee

doi:10.1016/j.jlp.2016.03.012

Cited by 15 publications

(6 citation statements)

References 4 publications

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“…The first section focuses on deriving the probabilistic distribution by considering the combination effect of gas dispersion analysis and its probability investigation. Leakage cases as the initial event should be studied based on the probabilistic approach, and then the frequency of established leak scenarios should be computed considering any relevant factors like wind direction, leak rate and distribution [31][32][33]. Ventilation analysis should be carried out prior to gas dispersion simulation to get the flow geometries influenced by wind conditions [34].…”

Section: Explosion Risk Analysis Of Offshore Facilitiesmentioning

confidence: 99%

A Critical Review of a Computational Fluid Dynamics (CFD)-Based Explosion Numerical Analysis of Offshore Facilities

Kang

Wang

et al. 2022

Arch Computat Methods Eng

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In oil and gas industries, the explosive hazards receive lots of attention to achieve a safety design of relevant facilities. As a part of the robust design for offshore structures, an explosion risk analysis is normally conducted to examine the potential hazards and the influence of them on structural members in a real explosion situation. Explosion accidents in the oil and gas industries are related to lots of parameters through complex interaction. Hence, lots of research and industrial projects have been carried out to understand physical mechanism of explosion accidents. Computational fluid dynamics-based explosion risk analysis method is frequently used to identify contributing factors and their interactions to understand such accidents. It is an effective method when modelled explosion phenomena including detailed geometrical features. This study presents a detailed review and analysis of Computational Fluid Dynamics-based explosion risk analysis that used in the offshore industries. The underlying issues of this method and current limitation are identified and analysed. This study also reviewed potential preventative measures to eliminate such limitation. Additionally, this study proposes the prospective research topic regarding computational fluid dynamics-based explosion risk analysis.

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Section: Explosion Risk Analysis Of Offshore Facilitiesmentioning

confidence: 99%

A Critical Review of a Computational Fluid Dynamics (CFD)-Based Explosion Numerical Analysis of Offshore Facilities

Kang

Wang

et al. 2022

Arch Computat Methods Eng

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“…A lot of efforts have been put into the prediction and selection of gas explosion scenarios in offshore installations [2][3] [4][5] [6]. API RP WSD [7] provides a selection process for screening out high-risk fire and explosion scenarios, but it still relies on expert's experience and judgment to further refine those scenarios.…”

Section: Introductionmentioning

confidence: 99%

An improved method for quantitative risk assessment of unconfined offshore installations subjected to gas explosions

Bai

Paik

et al. 2020

Structures

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Previous related research has focused on consequences analysis of confined rather than unconfined structures against explosion accidents. This paper introduces an improved method for quantitative risk assessment of unconfined offshore installations subjected to gas explosions. In the present study, a floating, production, storage, and offloading unit (FPSO) is given as an example to present the proposed method. Instead of the most unfavorable scenario, lots of random scenarios are selected by the probabilistic sampling approach. The method for determining the equivalent gas cloud position is illustrated in the conversion between dispersion and explosion scenarios. Maximum and average overpressures are obtained by computational fluid dynamics (CFD) simulation. Besides overpressure exceedance curves, the combination of overpressure and probability method is adopted based on the definition of risk. This work allows finer scenarios' sampling results and reduces the computational costs.

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“…The behaviour of this cloud is a complex phenomenon to analyse due to the different parameters involved in the flow dynamics. These parameters are the leak rate, the wind speed, the leak direction, release duration and other actions of mitigation [1,2,3,4]. In the evaluation of the incidence of these affecting factors in the cloud behaviour have been done by numerous methodologies.…”

Section: Introductionmentioning

confidence: 99%

The nature of flammable cloud volumes in semi-confined environment under the influence of flow of air

Silgado-Correa

Ferreira

Vianna

2020

Journal of Loss Prevention in the Process Industries

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Influence of scenario choices when performing CFD simulations for explosion risk analyses: Focus on dispersion

Cited by 15 publications

References 4 publications

A Critical Review of a Computational Fluid Dynamics (CFD)-Based Explosion Numerical Analysis of Offshore Facilities

A Critical Review of a Computational Fluid Dynamics (CFD)-Based Explosion Numerical Analysis of Offshore Facilities

An improved method for quantitative risk assessment of unconfined offshore installations subjected to gas explosions

The nature of flammable cloud volumes in semi-confined environment under the influence of flow of air

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