The Joint Industry Project (JIP) on Blast and Fire Engineering for Topside Structures revealed that computational fluid dynamic (CFD) modeling of gas explosions in highly congested and open geometries still remains a challenge. In the present study, the three realistic field scale explosion experiments specified by the Explosion Model Evaluation Project (EME) are investigated using the explosion simulator, EXSIM. The influence of spatial and temporal resolutions on the gas explosion predictions is examined by varying the calculation domain, number of control volumes and Courant number. For gas explosions in open geometries, the calculations show that the Courant number appears in particular to be influential in open geometries.
展开▼
