SLAB View


Μοντέλο Ατυχηματικής Απελευθέρωσης Τοξικών Αερίων!


The best tool to predict hazardous zone and potential impacts of accidental releases. Ideal for EPA's Risk Management Plan (RMP) and to analyze emissions from accidental releases of toxic gases.

SLAB View can model continuous, finite duration, and instantaneous releases from four types of sources: a ground-level evaporating pool, an elevated horizontal jet, a stack or elevated vertical jet, and a ground-based instantaneous release.

Some features that will save a lot of time and hassle include:

Input Requirements

1. Spill Type - The model supports the following spill types: a ground level evaporating pool, an elevated horizontal jet, a stack or elevated vertical jet, and a ground-based instantaneous release.
2. Source Properties - Define the properties for the material being released into the atmosphere: molecular weight, vapor heat capacity, boiling point temperature, heat of vaporization, liquid heat capacity, etc. SLAB View comes with an extensive database of toxic gases' properties to be used with the SLAB model.
3. Spill Parameters - Define the characteristics of the spill such as: temperature of the source material, mass source rate, source area, instantaneous or continuous source duration, and source height.
4. Field Parameters - Define parameters related to the spill scenario site. These parameters are: concentration average time, maximum downwind distance, and heights of concentration calculation.
5. Met Parameters - These are the meteorological parameters for the scenario you are modeling: surface roughness height, ambient measurement height, ambient wind speed, ambient temperature, relative humidity, and stability class.

SLAB View Postprocessing

Various types of graphical output can be produced. You may choose to have the footprint of the puff released to the atmosphere, a time dependent color puff, transparent contour plots, and X-Y plots showing maximum concentration versus downwind distances. For easy reference and visualization of your results, you can import map files in AutoCAD DXF format or in Bitmap format and use them as a backdrop. The following is a description of each one of the output types available within SLAB View:
1. Footprints: You specify the concentration level and SLAB View will print a "footprint" for that particular concentration level. A "footprint" describes the total area impacted by the source material following up release. For a footprint, you can select the color, shading, and line style.
2. Puffs: After running the model, SLAB View displays all the available time-dependent puffs. A puff shows the area impacted at a particular point in time after the release. You can select from a list at which output time a puff should be displayed. From the Contour Options dialog, you can enhance the appearance of these contour puffs:
3. XY Plot: SLAB View automatically produces XY plots showing the maximum concentration along the footprint center line. SLAB View has a complete graphics package built-in, which offers you complete control of the appearance of your plot. You can even have XY plots in 3D!
For quality-quality report presentation, you can print footprints and puffs with the overlay site map using SLAB View project templates. With these templates, you can print your company name, your name, date, modeling options, title, levels of concentration, etc. In this way, you have the basic information of the printed results on paper. If you want to paste your results into your report, you can also copy the contents of the drawing area to the clipboard and paste it into your favorite Windows word processor. With SLAB View, you eliminate the need of buying a graphics package like SURFER.

Note


SLAB View is a complete graphical user interface for the SLAB model. SLAB is a dispersion model for denser-than-air releases, developed by the Lawrence Livermore National Laboratory, with support from the U.S. DOE, USAF Engineering and Services Center, and the American Petroleum Institute. Due to copyright restrictions, the SLAB numerical code must be downloaded, for FREE, from the SCRAM BBS.

PC 386/486/Pentium with 8 MB RAM and Windows 3.x/95/NT

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Incredible NetworksΤελευταία Ενημέρωση 27 Ιουλίου 2004 - Last Revised on July 27, 2004
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