Internal and External Overpressure Calculation for Vented Gas Explosion by Using a Combined Computational Fluid Dynamics Approach

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Overpressure Calculation for Vented Gas Explosion by Using a Combined Computational Fluid Dynamics Approach</title> <meta name="description" content="Internal and External Overpressure Calculation for Vented Gas Explosion by Using a Combined Computational Fluid Dynamics Approach"> <meta name="keywords" content="vented gas explosion, internal pressure, external pressure, CFD simulation, FLACS, ANSYS Fluent"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar 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class="card-body"><strong>Paper Count:</strong> 87359</div> </div> </div> </div> <div class="card publication-listing mt-3 mb-3"> <h5 class="card-header" style="font-size:.9rem">Internal and External Overpressure Calculation for Vented Gas Explosion by Using a Combined Computational Fluid Dynamics Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jingde%20Li">Jingde Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong%20Hao"> Hong Hao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recent oil and gas accidents have reminded us the severe consequences of gas explosion on structure damage and financial loss. In order to protect the structures and personnel, engineers and researchers have been working on numerous different explosion mitigation methods. Amongst, venting is the most economical approach to mitigate gas explosion overpressure. In this paper, venting is used as the overpressure alleviation method. A theoretical method and a numerical technique are presented to predict the internal and external pressure from vented gas explosion in a large enclosure. Under idealized conditions, a number of experiments are used to calibrate the accuracy of the theoretically calculated data. A good agreement between the theoretical results and experimental data is seen. However, for realistic scenarios, the theoretical method over-estimates internal pressures and is incapable of predicting external pressures. Therefore, a CFD simulation procedure is proposed in this study to estimate both the internal and external overpressure from a large-scale vented explosion. Satisfactory agreement between CFD simulation results and experimental data is achieved. <iframe src="https://publications.waset.org/abstracts/82166.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=vented%20gas%20explosion" title="vented gas explosion">vented gas explosion</a>, <a href="https://publications.waset.org/abstracts/search?q=internal%20pressure" title=" internal pressure"> internal pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=external%20pressure" title=" external pressure"> external pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD%20simulation" title=" CFD simulation"> CFD simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=FLACS" title=" FLACS"> FLACS</a>, <a href="https://publications.waset.org/abstracts/search?q=ANSYS%20Fluent" title=" ANSYS Fluent"> ANSYS Fluent</a> </p> 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Internal and External Overpressure Calculation for Vented Gas Explosion by Using a Combined Computational Fluid Dynamics Approach