We present results from hydrogen dispersion simulations from a pressurized reservoir at constant flowrate, in the presence and absence of a wall. The dispersion simulations are performed using acommercial finite volume solver. Validation of the approach is discussed. Constant concentrationenvelopes corresponding to the 2%2 4%2and 15%2hydrogen concentration in air are calculated for asubcritical vertical jet and for an equivalent subcritical horizontal jet from a high pressure reservoir.The consequences of ignition and the resulting overpressure are calculated for subcritical horizontaland vertical hydrogen jets and in the latter case, compared to available experimental data.
Type of Publication
Year of Publication