Speaker
Description
The advanced gas explosion simulator EXSIM has been in active development and, subsequently, use on industrial projects since 1989. In recognition of the potentially important role that could be played by hydrogen in the energy transition, and the explosion hazards presented by accidental loss of containment of this energetic fuel, significant efforts to improve the predictive performance of EXSIM for hydrogen-air mixtures have been undertaken in recent years as part of a Joint Industry Project. In this article, the performance of the improved development version of the code is compared against that of the current production version for a series of experiments featuring a range of gas concentrations, congestion levels and degrees of confinement. The modified code is shown to display significantly improved predictive capabilities, particularly for lightly congested geometries. Further development of the model is needed in order to extend the code’s capabilities to include simulation of fuel gas mixtures (e.g. hydrogen-methane fuels).
