Temporal evolution of nitrobenzene dispersion in Roma-Areeiro after a train accident - top view скачать в хорошем качестве

Temporal evolution of nitrobenzene dispersion in Roma-Areeiro after a train accident - top view

Simulation of the temporal evolution (in seconds) of Nitrobenzene concentration levels in PPM at pedestrian level following a train crash at Roma Areeiro train station. The wind direction is assumed to be East, the most frequent wind direction in the area. The simulation methodology is based on wall-modeled Large Eddy Simulation implemented in the Barcelona Supercomputing Center’s finite-element code Alya. For this particular case, Vrema’n subgrid model together with an equilibrium Atmospheric Boundary Layer wall function has been used [1]. Regarding numerical discretization, low dissipation schemes for finite elements have been used [2]. The computational mesh features 120 million elements and the simulation has been run in MareNostrum IV supercomputer using 2016 CPU, totaling 200.000 CPU-hours (see http://lisboaaberta.cm-lisboa.pt/inde... for details). [1] DOI: https://doi.org/10.1002/fld.4770 [2] DOI:10.1016/j.jcp.2019.04.004