This technical note serves as the definitive reference guide for the FAST (Fire and Smoke Transport) version 18 software, addressing the need for standardized documentation in fire safety modeling. Walter W. Jones, a researcher associated with the National Institute of Standards and Technology (NIST), provides a comprehensive breakdown of the mathematical source terms, input parameters, and output data structures required to operate the model effectively within multi-compartment environments.

Experts and fire safety engineers utilize this document as a foundational technical manual for implementing NIST-developed fire modeling software. Readers frequently note the high level of technical density, as the text is intended specifically for professionals and researchers familiar with computational fluid dynamics and fire safety engineering.