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CFD Simulation and Mitigation with Boiling Liquid Expanding Vapor Explosion (BLEVE) Caused by Jet Fire

Israel Military Industries, Ltd., Ramat Hasharon 47100, Israel
ChemEngineering 2019, 3(1), 1; https://doi.org/10.3390/chemengineering3010001
Received: 25 September 2018 / Revised: 30 October 2018 / Accepted: 20 December 2018 / Published: 24 December 2018
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Abstract

Different kinds of explosions are driven by the internal energy accumulated in compressed gas or superheated liquid. A well-known example of such an explosion is the burst of a vessel with pressure-liquefied substance, known as Boiling Liquid Expanding Vapor Explosion (BLEVE). Hot BLEVE accident is caused mainly by direct heating (pool fire or jet fire) of the steel casing at the vapor side of the tank to temperatures in excess of 400 °C. Thermal insulation around the tank can significantly reduce and retard the excessive heating of the tank casings in a fire. This will allow fire fighters enough time to reach the accident location and to cool the LPG (Liquid Petroleum Gas) tank to avoid the BLEVE, to extinguish the fire or to evacuate the people in the vicinity of the accident. The proposed algorithm addresses several aspects of the BLEVE accident and its mitigation: Computational Fluid Dynamic (CFD) Simulation of jet fire by using fire dynamics simulator (FDS) software by using large eddy simulation (LES); calculation of the convective and radiative heat fluxes by using the impinging jet fire theory; performing thermochemical and heat transfer analysis on the glass-woven vinyl ester coating of the vessel by using FDS software (version 5); and COMSOL Multiphysics (version 4.3b) during the heating phase of composite and calculation of the time period required to evaporate the liquefied propane by using the first and second laws of thermodynamics. View Full-Text
Keywords: BLEVE; heptane jet fire; fire dynamic simulation software (FDS); computational fluid dynamics (CFD); large eddy simulation (LES); convective heat flux; radiative heat flux; glass-woven vinyl ester lining; heat transfer and thermochemical analysis; stainless steel AISI 310 alloy BLEVE; heptane jet fire; fire dynamic simulation software (FDS); computational fluid dynamics (CFD); large eddy simulation (LES); convective heat flux; radiative heat flux; glass-woven vinyl ester lining; heat transfer and thermochemical analysis; stainless steel AISI 310 alloy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Davidy, A. CFD Simulation and Mitigation with Boiling Liquid Expanding Vapor Explosion (BLEVE) Caused by Jet Fire. ChemEngineering 2019, 3, 1.

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