Abstract
Abstract An analysis has been carried out using a CFD model (FLACS) to simulate large-scale liquid hydrogen (LH2) pool releases to examine their behaviour and predict the LH2 pool size, downwind hazardous distance, and flammable mass of the hydrogen-air clouds formed for different environmental conditions and release scenarios. The FLACS pool model reproduces similar qualitative trends with regard to the effect of spill rate, spill duration and wind speed on the flammable cloud extent to those observed in the NASA WSTF experimental tests, although significant quantitative differences in the results are also apparent. FLACS simulations were also performed for a number of different transient and continuous LH2 spill release rates to predict the maximum downwind hazardous distances as a function of the LH2 spill release rate. The results are intended to assist with assessing the safety of future LH2 aircraft and airport LH2 storage facilities, being considered as part of the EU ENABLEH2 project.
| Original language | English |
|---|---|
| Pages (from-to) | 23851-23871 |
| Journal | International Journal of Hydrogen Energy |
| DOIs | |
| Publication status | Published - 13 Aug 2020 |
| Externally published | Yes |
Keywords
- Flammable cloud dispersion
- Liquid hydrogen safety
- Hazardous distance
- FLACS
- ENABLEH2
- LH2 spill