Fire Dynamics and Smoke Control Quickly build Fire Dynamics Simulator (FDS) models with PyroSim. PyroSim News Find out what’s new in PyroSim development. Review release notes and announcements. Read More » Features in PyroSim Reduce the time required to build complex models for the FDS (Fire Dynamics Simulator) from NIST. Import CAD models and use integrated parallel processing to speed analyses. Read More » Publications Read firsthand accounts of how PyroSim has impacted engineering consultant industries and academic communities through case studies and research papers. Read More »