Fires & Flares

Fires & Flares

Fires and flares have been particularly difficult to simulate with traditional computational fluid dynamics (CFD) simulation tools that are based on Reynolds-Averaged Navier-Stokes (RANS) approaches. The large-scale mixing due to vortical coherent structures in these flames is not readily reduced to steady-state CFD calculations with RANS. Simulation of combustion using Large Eddy Simulations (LES) has made it possible to more accurately simulate the complex combustion seen in fires and flares. LES simulations of fires and flares exhibit puffing created by buoyancy, indicating that the combustion dynamics are captured in the simulation. These simulations provide information that may help design or operate flares so as to reduce or eliminate harmful pollutants and increase combustion efficiency.


Jeremy Thornock

Fire/flare simulation


Philip Smith

Fire/flare simulation


Michal Hradisky

Flare simulation

Fires & Flares Project Sites:



Address   155 South 1452 East
Room 350
Salt Lake City, UT 84112
Phone (801) 585-1233


The mission of ICSE is education through interdisciplinary research on high-temperature fuel utilization processes for energy generation, and associated environmental, health, policy, and performance issues.