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Challenges in Modeling Ground Flares Using Computational Fluid Dynamics

[+] Author Affiliations
Philip Diwakar, Vibhor Mehrotra, Rimon Vallavanatt, Thomas McLean

Bechtel Corporation, Houston, TX

Paper No. PVP2004-3121, pp. 69-81; 13 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Computational Technologies for Fluid/Thermal/Structural/Chemical Systems With Industrial Applications, Volume 2
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4686-5
  • Copyright © 2004 by ASME


Industrial application of Computational Fluid Dynamics (CFD) are varied and many. However CFD requires the solution of complex fluid-flow problems in conjunction with equipment design, process and product development and optimization. The solution of such complex problems is possible through the coordination between industrial CFD engineers, software developers, consultants and academic scientists. In the petrochemical industry, CFD may be used for a variety of purposes such as air recirculation studies in LNG plants, burners in coker furnaces, multiphase studies in heat exchangers to name just a few. In particular combustion, flames, flares and chemical reaction are of interest because of the physics and the complex nature of the process. The topic selected for this presentation is the study of wet ground flares during a large-scale propane release and the effect of the radiation release on the environment and surrounding buildings and vegetation. The flare characteristics and radiation on the surrounding terrain form an integral part of the information required by the National standard for “Control of Major Hazard Facilities”. The study of individual flames from each burner with nozzles of the order of 1mm and the effect of 180 burners in a large area and surrounding terrain with length scales of several hundred meters make up a very intriguing problem of varying length scales. The results of this analysis are presented concentrating on the effects during the large scale conflagration event on the surrounding buildings, vegetation, aircraft, hills and mangroves.

Copyright © 2004 by ASME



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