Hgsystem: Dispersion models for ideal gases (version 3.0) (for microcomputers). Data file
As a result of many years in-house research, the gas dispersion group at Shell Research Ltd. Thornton (United Kingdom) has developed a package of mathematical models, called HGSYSTEM, to study the atmospheric dispersion of accidental pollutant releases with emphasis on denser-than-air materials. HGSYSTEM can simulate different dispersion scenarios (jet dispersion, heavy gas dispersion, passive dispersion). HGSYSTEM can model the full HF chemistry and thermodynamics. Most of the modules in the HGSYSTEM package can also be used for more general, non-reactive (ideal gas) releases as well. Validation of the HF-related simulations has been done with the well-known Goldfish Test Series. HGSYSTEM is in wide use for simulation of atmospheric dispersion scanarios for HF and other pollutant releases. It has been assessed against other models and found to rank amongst the best available atmospheric dispersion models in the world. HGSYSTEM sets the standard for HF dispersion calculations. The following major changes have been made to HGSYSTEM 1.0 to obtain HGSYSTEM 3.0.: The thermodynamical models available in HGSYSTEM have been extended. The full HF chemistry and thermodynamical model is now suitable for mixtures of HF, water, and an inert ideal gas. The non-reactive ideal gas description has been extended to multi-compound liquid-vapor mixtures (aerosols). A database containing physical properties for some 30 compounds has been added to HGSTSTEM. This database is needed when using the new two-phase, multi-compound thermodynamical model; the PLUME model for pressurized releases has been extended to model jet dispersion of multi-compound, two-phase mixtures; A new model describing the initial phase of instantaneous releases has been added.
- Research Organization:
- American Petroleum Inst., Washington, DC (United States)
- OSTI ID:
- 285108
- Report Number(s):
- PB-96-501960/XAB; TRN: 62252612
- Resource Relation:
- Other Information: DN: DOS operating system. Language: FORTRAN. 80386 processor or greater, MS-DOS 3.3, 4 MB RAM, 2.5 MB free disk space, and a math coprocessor recommended. Copyright Shell Internationale Research Maatschappij B.V. 1994.; PBD: Dec 1995
- Country of Publication:
- United States
- Language:
- English
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