Modeling of explosion thermal radiation
ABSTRACT The hydrodynamic and radiation processes accompanying explosions of chemical explosives and fuel-air mixtures have been considered.
Computer modeling of the radiation from a fire ball of explosion and a flame of diffusion combustion of a hydrocarbon fuel
has been performed. The dependences of the heat flux density from the region occupied by explosion and combustion products
on its temperature and geometric characteristics have been determined. Thermal load distributions on targets of different
orientations in the vicinity of the energy release zone have been obtained. A comparison of the thermal parameters on radiation
detectors with the criteria of thermal affection of people and ignition of combustible materials has been made.
Keywordsexplosion–shock wave–fire ball–thermal radiation–irradiance of targets
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ABSTRACT: This paper describes the status of the 2008 edition of the HITRAN molecular spectroscopic database. The new edition is the first official public release since the 2004 edition, although a number of crucial updates had been made available online since 2004. The HITRAN compilation consists of several components that serve as input for radiative-transfer calculation codes: individual line parameters for the microwave through visible spectra of molecules in the gas phase; absorption cross-sections for molecules having dense spectral features, i.e. spectra in which the individual lines are not resolved; individual line parameters and absorption cross-sections for bands in the ultraviolet; refractive indices of aerosols, tables and files of general properties associated with the database; and database management software. The line-by-line portion of the database contains spectroscopic parameters for 42 molecules including many of their isotopologues. (c) 2009 Elsevier Ltd. All rights reserved.Journal of Quantitative Spectroscopy and Radiative Transfer 06/2009; 110(2009):533-572. DOI:10.1016/j.jqsrt.2009.02.013 · 2.29 Impact Factor
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ABSTRACT: A new molecular spectroscopic database for high-temperature modeling of the spectra of molecules in the gas phase is described. This database, called HITEMP, is analogous to the HITRAN database but encompasses many more bands and transitions than HITRAN for the absorbers H2O, CO2, CO, NO, and OH. HITEMP provides users with a powerful tool for a great many applications: astrophysics, planetary and stellar atmospheres, industrial processes, surveillance, non-local thermodynamic equilibrium problems, and investigating molecular interactions, to name a few. The sources and implementation of the spectroscopic parameters incorporated into HITEMP are discussed.Journal of Quantitative Spectroscopy and Radiative Transfer 10/2010; 111(15-111):2139-2150. DOI:10.1016/j.jqsrt.2010.05.001 · 2.29 Impact Factor
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ABSTRACT: Current models for evaluating the exclusion (hazard) zones around liquefied natural gas (LNG) fires in both U.S. Regulations and NFPA-59A standard are prescriptive and require the consideration of large LNG releases. These models do not consider the effects of the combustion dynamics associated with large-size pool burning. Oxygen starvation in the core of LNG fires of diameters ≳ 35 m leads to the formation of nonluminous, cold soot (smoke) resulting in a reduction of thermal energy radiated by the fire to the surroundings. The net effect is smaller (calculated) thermal hazard distances for exposure to people (by factors of 2 or 3 compared to results ignoring this phenomenon). Available large-scale LNG fire test information is reviewed to quantify the effect of this phenomenon. This paper also discusses the common mistakes made in calculating the thermal radiation hazard distances around large fires by using, for the energy radiated from the fire, a constant percentage of energy generated by combustion. The criteria for setting thermal radiation hazard zones around large hydrocarbon fires are also reviewed. © 2005 American Institute of Chemical Engineers Process Saf Prog, 2005Process Safety Progress 09/2005; 24(3):192 - 202. DOI:10.1002/prs.10082 · 0.59 Impact Factor