Multi-Parameter, Multiple Fuel Mixture Fraction Combustion Model for the Fire Dynamics Simulator.
Multi-Parameter, Multiple Fuel Mixture Fraction
Combustion Model for the Fire Dynamics Simulator.
Floyd, J. E.
NIST GCR 08-920; 100 p. November 2008.
Sponsor:National Institute of Standards and Technology,
fuel mixtures; combustion models; computer programs;
standards; mixture fraction; sprinkler spray; fire
detection; color; droplets; validation; fire tests;
Work performed during this reporting involved seven
major task areas: implementation of modern software
development practices along with a coding standard
update, mixture fraction enhancements and related
changes, addition of numerous enhancements improving the
usability and flexibility of FDS for the practicing
engineer, verification and validation testing, support
of testing at NIST, user support via online bug tracking
and discussion forums, and investigation of alternate
methods of data output and storage. Details on each task
area will be provided in sections 3.0 through 9.0. FDS
development began in the 1980's. At the time FDS was
little more than a research tool for investigating
buoyant flows. The development team consisted of a small
group of people within the Building and Fire Research
Laboratory. Developers at the time did not envision that
FDS would become the gold standard for fire modeling
worldwide. Little attention was paid to issues of
software quality assurance, formal software testing, and
to the impact of coding practices and standards on
future development. This approach continued through the
release of FDS 4. Given FDS's start as a research tool
being developed by researchers at a National lab, the
above issues are not surprising. However, with the focus
of this grant on greatly expanding the capabilities of
FDS, it was clear that changes were needed in how FDS
was developed, tested, and maintained.