STEEP320 is the program of initial level for Monte Carlo calculating the radiation characteristics of isothermal and nonisothermal axisymmetric blackbody radiators. STEEP320 uses the Gray Uniform Specular-Diffuse (Gray USD) model of reflection that is most suitable for the case when materials of cavity walls have low spectral selectivity. Within framework of the Gray USD model, STEEP320 allows calculating entire spectral effective emissivity curve at one run. For blackbodies whose materials have to be described by selective (wavelength-dependent) USD model,  STEEP320 should compute spectral effective emissivities  consecutively, wavelength-by-wavelength. For details, see STEEP320 Key Features list, Comparative Table, or download the Manual.

Download STEEP320 Evaluation version (3.1 MB)

Download STEEP320 Manual (2.5 MB)

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STEEP320 doesn't require special efforts for installation. Just download the Evaluation Version, unzip it, save STEEP320 folder in the convenient place on the hard drive and run STEEP320.exe. The Evaluation Version has several restrictions (see details in the appropriate Section of the Manual.) After purchasing the product license, you'll receive the activation key which will turn the Evaluation Version into the full-functioned unrestricted program. The Software Licence Agreement is included into the Manual. Go to the Purchase page to see how to buy the license.

STEEP320 is suitable for low-budget laboratories. The lowest price is caused not the lack of any features available in STEEP321 but simplified data structure and Graphical User Interface. This program even has features that are missing in other programs of STEEP3 family. Almost all results which can be obtained using STEEP321 can be also obtained using STEEP320 with a little more time-consuming calculations.

STEEP320 can be also recommend for teaching and academic usage.
STEEP320 Key Features
Axially symmetrical cavities can be formed by rotation of polygonal line having up to 201 vertices
Simultaneous calculation of effective emissivity and radiance temperatures of isothermal and nonisothermal cavities for up to 501 wavelengths
Up to 101 temperature points in temperature distribution
Calculation of total (integrated over the whole spectrum) effective emissivities and radiation temperatures
Five types of viewing conditions (Normal, Directional, Right Conical, Integrated, and Local Hemispherical)
Consecutive calculations for up to 201 viewing conditions of the same type
Possibility to take into account the contribution of a non-zero background radiation
Built-in expandable databases for:
· Geometrical parameters, emissivity and diffusity for each cavity surface’s segment
· Temperature distributions along cavity generatrix
· Results of numerical modeling (effective emissivities and radiance temperatures)
Possibility to save tabulated data in text files or as MS Excel spreadsheets
Automatically generated reports in ASCII format
Visualization tools for:
· Cavity scaling cross-section
· Viewing conditions
· Temperature distribution along cavity generatrix
· Dependences of effective emissivities and radiance temperarures on the wavelength
· Dependences of effective emissivities and radiance temperarures on a variable parameter of viewing conditionsScaling
Editable, exportable, and printable graphs
Requirements for hardware and software :
     · CPU frequency 1 GHz or higher
     · Screen Resolution 1024 × 768 or greater
· Hard disk space 10 MB minimum
· RAM 2 MB minimum
· OS MS Windows® 2000/ME/XP/Vista/7/8 (in compatibility mode)