Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7724561 | International Journal of Hydrogen Energy | 2011 | 6 Pages |
Abstract
The effect of surfaces on the extent of high pressure horizontal unignited jets of hydrogen and methane is studied using computer fluid dynamics simulations performed with FLACS Hydrogen. Results for constant flow rate through a 6.35Â mm diameter pressure relief Device (PRD) orifice from 100Â barg, 250Â barg, 400Â barg, 550Â barg and 700Â barg compressed gas systems are presented for both horizontal hydrogen and methane jets. To quantify the effect of a horizontal surface on the jet, the jet exit is positioned at various heights above the ground ranging from 0.1Â m to 10Â m. Free jet simulations are performed for comparison purposes. Also, for cross-validation purposes, a number of cases for 100Â barg releases were simulated using proprietary models developed for hydrogen within commercial CFD software PHOENICS. It is found that the presence of a surface and its proximity to the jet centreline result in a pronounced increase in the extent of the flammable cloud compared to a free jet.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
A. Hourri, B. Angers, P. Bénard, A. Tchouvelev, V. Agranat,