Abstract
A 30-cm diameter methanol pool fire was modeled using Sandia National Laboratories SIERRA/Fuego turbulent reacting flow code. Large Eddy Simulation (LES) with subgrid turbulent kinetic energy closure was used as the turbulence model. Combustion was modeled and simulated using a strained laminar flamelet library approach. Radiative heat transfer was modeled using the gray-gas approximation. In this investigation, the area validation metric (AVM) is employed to examine simulation results against experimental data. Time-averaged values of temperature and axial velocity at multiple locations along the domain centerline are analyzed for two computational meshes. Two time ranges for averaging temperature and axial velocity are evaluated, and the relationship between the results and the underlying physics is mentioned. Flame height is estimated using an intermittency definition, and the effect of the threshold variable is discussed. Temperature and mixture fraction were used as threshold variables, and the sensitivity of flame height to changes in each is examined. This study aims to increase understanding of the simulation results in light of a specific validation metric, and serve as a start to further validation studies.
