Simulation and assessment of SO2 toxic environment after ignition of uncontrolled sour gas flow of well blowout in hills

Zhu, Yiliang; Chen, Guo-Ming

doi:10.1016/j.jhazmat.2010.01.055

Cited by 20 publications

(2 citation statements)

References 17 publications

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“…Owing to the great advancement in computer science, the accuracy and reliability of CFD computation have improved substantially, and it has been widely used to study real-life problems, including both gas dispersion study and exposure risk assessment [27,28]. It is commonly recognized that CFD simulations can be very sensitive to a large number of computational parameters.…”

Section: Cfd Simulation Settingsmentioning

confidence: 99%

Dispersion Characteristics of Hazardous Gas and Exposure Risk Assessment in a Multiroom Building Environment

Liu

Peng

et al. 2019

IJERPH

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The leakage of hazardous chemicals during storage and transport processes is a kind of commonly occurring accident that can pose a serious threat to people’s lives and property. This paper aims to investigate the airflow and dispersion characteristics of hazardous gas around a multiroom building, and evaluate the corresponding exposure risks. The effects on indoor air quality (IAQ) when polluted air enters a room under different indoor and external conditions were examined by using a computational fluid dynamics technique. First, the numerical model established herein was verified by the available wind-tunnel experimental data, and acceptable agreement was found between the predicted and measured velocities. Subsequently, the effects of different natural ventilation paths, wall porosities and outdoor pollutant source characteristics on the airflow and contaminant distribution were evaluated. The study not only reveals the airflow pattern and concentration distribution in indoor spaces under different natural ventilation conditions but also quantitatively analyzes the relationship between the probability of death and the corresponding source strength under the circumstance of pollutant leakage near a building. The results can be useful for the prevention and control of hazardous chemical gas leakages and provide some guidance on evacuation after an accidental or routine leakage.

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Section: Cfd Simulation Settingsmentioning

confidence: 99%

Dispersion Characteristics of Hazardous Gas and Exposure Risk Assessment in a Multiroom Building Environment

Liu

Peng

et al. 2019

IJERPH

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“…Hence, the staff are unable to calculate and analyze various blowout parameters at close range and take effective measures to control the accident quickly. In other words, in-depth research on measurement techniques and equipment such as blowout fluid parameters should be conducted in-depth research on measurement techniques and equipment such as blowout fluid parameters, which is of great significance for early blowout emergency rescue [3][4][5][6]. Dong et al carried out the research investigated on the equilibrium state of the underwater emergency sealing device, and simulated the analysis model, and obtained revealed the relationship between its flow velocity and the lifting force [7].…”

Section: Introductionmentioning

confidence: 99%

Blowout Fluid Velocity Measurement Method based on High-speed Sequence Images

Teng,

Zhang

2024

FCIS

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Given the high-temperature and high-pressure environment after the blowout, the staff usually cannot calculate and analyze various blowout parameters at close range and thus take effective measures to control accidents quickly. In this paper, a blowout fluid velocity measurement method is proposed based on high-speed sequence images, and simulation experiments are conducted. The scene conditions of blowout accidents are simulated and analyzed. On this basis, cameras are adopted to shoot a large number of simulated blowout fluid videos from different angles under outdoor conditions. Afterward, the video is converted into a multi-frame image, and the blowout fluid image feature point detection and extraction model are established based on the orb (oriented fast and rotated brief) algorithm. On the feature points extracted by the model, the gms algorithm is used to match the features of the blowout fluid images in the front and back frames. Additionally, the wrong matching points are eliminated using the ransac (random sample consensus) algorithm, and the obtained feature point pairs are employed into the flow velocity calculation model for flow velocity calculation. The results demonstrate that the measured fluid velocity is more accurate. The method proposed in this study can provide reliable data support for early blowout emergency rescue.

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Evacuation Risk Assessment of Regional Evacuation for Major Accidents and Its Application in Emergency Planning

Gai

Deng

2018

Decision-Making Analysis and Optimization Modeling of Emergency Warnings for Major Accidents

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Simulation and assessment of SO2 toxic environment after ignition of uncontrolled sour gas flow of well blowout in hills

Cited by 20 publications

References 17 publications

Dispersion Characteristics of Hazardous Gas and Exposure Risk Assessment in a Multiroom Building Environment

Dispersion Characteristics of Hazardous Gas and Exposure Risk Assessment in a Multiroom Building Environment

Blowout Fluid Velocity Measurement Method based on High-speed Sequence Images

Evacuation Risk Assessment of Regional Evacuation for Major Accidents and Its Application in Emergency Planning

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