Accession Number : ADA200121


Title :   Source Characterization of Heavy Gas Dispersion Models for Reactive Chemicals. Volume 1


Descriptive Note : Final rept. 22 Jan 1986-21 Dec 1987


Corporate Author : TECHNOLOGY AND MANAGEMENT SYSTEMS INC BURLINGTON MA


Personal Author(s) : Raj, Phani K ; Morris, John A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a200121.pdf


Report Date : 21 Dec 1987


Pagination or Media Count : 260


Abstract : U.S. Air Force and other agencies which handle, store and transport chemicals, fuels and oxidizers are interested in determining the potential area of hazard posed by the dispersion of vapors generated by accidental spills. This report describes the mathematical models developed to described a variety of source types and the dispersion of vapor clouds/plumes in the atmosphere. Sixteen different source types are modeled including pressurized liquid releases, flashing and aerosol formation, two phase jet releases, explosive releases and releases of high vapor pressure liquids, cryogenic liquids and gases. Dispersion model takes into account the differences in source characteristics, high-than-air density of clouds (due to aerosol presence, temperature or molecular weight). Reactions of the chemicals, if any, ..th water vapor in the air are modeled and considered in the dispersion model. Transition from heavy gas dispersion to near neutral density dispersion is modeled without abrupt changes in size or discontinuity in concentrations. Keywords: Heavy gas, Dispersion, Mathematical model, Reaction, Source models, Concentration contours.


Descriptors :   *MATHEMATICAL MODELS , *AEROSOLS , *DISPERSING , *CHEMICALS , *GASES , *PLUMES , SOURCES , CLOUDS , DENSITY , AIR FORCE , HAZARDS , MODELS , LIQUIDS , NEUTRAL , VAPORS , MOLECULAR WEIGHT , REACTIVITIES , HIGH PRESSURE , EXPLOSIVES , FUELS , TRANSPORT , RELEASE , OXIDIZERS , PRESSURIZATION , VAPOR PRESSURE , CRYOGENICS , SPILLING , ACCIDENTS , AEROSOL GENERATORS


Subject Categories : Operations Research
      Air Pollution and Control
      Environmental Health and Safety


Distribution Statement : APPROVED FOR PUBLIC RELEASE