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Petrochemical industry typical fire Numerical Simulation

Author: LiuMeiLei
Tutor: ZhaoDongFeng
School: China University of Petroleum
Course: Safety Technology and Engineering
Keywords: Pool fire Jet fire Fire behavior Thermal radiation Fluent Numerical Simulation
CLC: X937
Type: Master's thesis
Year: 2011
Downloads: 253
Quote: 4
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Abstract


Petrochemical industry due to its industry's peculiarities, prone to fire and explosion. In a variety of disasters and accidents type fires occupies a large proportion. Fire is dominated by flammable liquids and gas leaks after encountering an ignition source combustion occurs and cause, these flammable liquids and gases leak in an open environment fires a huge destructive effect, causing casualties and property losses. Relative to the explosion and toxic gas leakage, flammable liquids and gases fire direct damage limited in scope, but the flame direct contact with the device and the container surface, and thermal radiation on adjacent equipment and containers impact, making the scope of the accident and the extent of the damage upgrades. According to the petrochemical industry fire burning characteristics, we use computer simulation technique for a typical pool fires and jet fires numerical simulation. Based on the current pool fire and jet fire research status and development of the existing pool of fire and jet fire theoretical models were compared and analyzed, comparative analysis of various empirical model scope, describing the pool fire and jet fire burning characteristics and injury model. Applied Chemistry hydrodynamics fundamental law, the establishment of a fire during the basic control equations, and in accordance with the appropriate conditions selected radiation model. Establish the physical model, make reasonable assumptions to determine the initial and boundary conditions. The use of CFD technology computer simulation of the open environment of large liquid pool occurred pool fire and high pressure pipeline gas leak caused by the jet fire accident type. Among them, the pool fires were no wind, constant wind and changes in wind speed three kinds of conditions of the simulation; pair of jet fire in the natural wind external factors under the action carried out with different pressure pipeline simulation. Analysis of the simulation results obtained two kinds of disasters form flame shape, the flame temperature, flow and thermal radiation trends. Based on this, discussed fire thermal radiation distribution and the different factors affect it. Based on the results, you can petrochemical industry means the rational design and layout, forecasting, prevention and control of fire accidents and fire scenarios emergency rescue measures for the development, and to reduce risk of fire, explosions and other accidents caused casualties and property losses provide guidance. Ensure that the petrochemical industry production safety, maintaining social stability, has important economic and practical significance.

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CLC: > Environmental science, safety science > Safety Science > Safety Engineering > Petroleum, chemical industry security
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