1900

CFD Modelling OF LH2 Dispersion Using the ADREA-HF Code

Abstract

In the present work, the computational fluid dynamics (CFD) code ADREA-HF has been applied to simulate the very recent liquefied hydrogen spill experiments performed by the Health Safety Laboratory (HSL). The experiment consists of four LH2 release trials over concrete at a fixed rate of 60 lt/min, but with different release direction, height and duration. In the modeling, the hydrogen source was treated as a two phase jet, enabling simultaneous modeling of pool formation, spreading as well as hydrogen vapor dispersion. Turbulence was modeled with the standard k- model modified for buoyancy effects. The effect of solidification of the atmospheric humidity was taken into account. The predicted concentration at the experimental sensors? locations was compared with the observed one. The results from the comparison of the predicted concentration with and without solidification of the atmospheric humidity indicate that the released heat from the solidification affects significantly the buoyant behavior of the hydrogen vapor. Therefore the simulation with solidification of the atmospheric humidity is in better agreement with the experiment.

Related subjects: Safety
Countries: Greece ; United Kingdom
Loading

Article metrics loading...

/content/conference503
2011-09-12
2021-12-02
http://instance.metastore.ingenta.com/content/conference503
Loading

Supplements

CFD Modelling OF LH2 Dispersion Using the ADREA-HF Code

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error