Modelling of Ventilated Hydrogen Dispersion in Presence of Co-flow and Counter-flow

In the framework of the EU-funded project, HyTunnel-CS, an inter-comparison among partners CFD simulations  has  been  carried  out.  The simulations  are  based  on  experiments  conducted   within  the project by Pro-Science and involve hydrogen release inside a safety vessel testing different ventilation configurations. The different ventilation configurations that were tested are co-flow, counter-flow and cross-flow.  In the  current  study,  co-flow  and  counter-flow  tests   along  with  the  no  ventilation  test (m'  = S g/s,  d = 4 mm ) are simulated with the aim to validate available and well-known CFD codes against  such  applications  and  to  provide   recommendations  on  modeling  strategies. Special  focus  is given on modeling the velocity field produced by the fan during the experiments. The computational results are compared with the experimental results and a discussion follows regarding the efficiency of each ventilation configuration.