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NAI staff members have developed several major computer codes currently used worldwide.
These codes model multiphase flow of multicomponent fluids, phase change,
interfacial heat and momentum transfer, aerosol mechanics, smoke dispersion,
fire growth and all modes of heat transfer in fluids and solids. Modeling
approaches include finite difference, finite volume and finite element. These
codes are founded on basic engineering principles and have a wide range of
application.
NAI developed and markets the GOTHIC software package for
the analysis of thermal-hydraulic events in general confinement systems.
A common application of GOTHIC is modeling containments and
piping systems associated with commercial nuclear power plants.
GOTHIC is available for Unix and Linux, and for Windows 2000 and XP.
The software is driven by a flexible menu system and provides:
- Interactive graphical based input and output
- Structured organization of code input
- Libraries for generic data
- Simplified input modification and error checking
- Report quality output for all results
Graphical output includes contour and vector plots, as well as line graphs.
Data files can be written for input to advanced graphics packages for 3-dimensional display.
NAI staff have also participated in the development of many other engineering
analysis programs. We have worked with a variety of clients to solve industry
specific problems. Some examples include:
- Automated a suite of analysis codes for nuclear fuel performance for Framatome-ANP
- Developed a graphical interface for the FIRAC code for fire modeling
and aerosol dispersion for Los Alamos National Laboratory.
- Implemented a neutronics model in a thermal hydraulic code for Westinghouse
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