Evaluation Of An Les Code Against A Hydrogen Dispersion Experiment

Abstract

The Large Eddy Simulation (LES) methodology is used nowadays not only as a research tool, but also for practical applications. Given this fact, an LES code has been developed mainly targeting to turbulent dispersion problems. It has been incorporated into the well established in atmospheric and hydrogen dispersion applications ADREA-HF CFD code. In this study, the LES methodology is evaluated against a hydrogen release and dispersion experiment in a supposed hallway that has ventilation openings. Results from a Reynolds Averaged Navier Stokes (RANS) methodology and from the FDS LES code are also included. The new ADREA-HF LES code gave concentration values very close to the measured ones. The study includes comments about the advantages of the LES methodology and about the value of the Smagorinsky constant used in the LES models.