A CFD Validation of Fire Dynamics Simulator for Corner Fire
Keywords:CFD, fire dynamics simulator, corner fire, large eddy simulation
A computational study has been carried out for predicting the behaviour of a corner fire source for a reported experiment using a field model based code Fire Dynamics Simulator (FDS). Time dependent temperature is predicted along with the resulting changes in the plume structure. The flux falling on the wall was also observed. The analysis has been carried out with the correct value of the grid size based on earlier experiences and also by performing a grid sensitivity study. The predicted temperatures of the two scenarios at two points by the current analysis are in very good agreement with the earlier reported experimental data and numerical prediction. The studies have extended the utility of field model based tools to model the particular separate effect phenomenon like corner for one such situation and validate against experimental data. The present study have several applications in such as room fires, hydrogen transport in nuclear reactor containment, natural convection in building flows etc. The present approach uses the advanced Large Eddy Simulation (LES) based CFD turbulence model. The paper presents brief description of the code FDS, details of the computational model along with the discussions on the results obtained under these studies. The validated CFD based procedure has been used for solving various problems enclosure fire, ventilated fire and open fire from nuclear industry which are however not included in the present paper.