Abstract
Accidents in closed-space traffic object do force for further investigation of a flow phenomena – that might be a consequence of such large-scale events. Benefit that almost directly would be coming out of this investigative approach is an optimal method for artificial ventilation, that must find mirroring in a annual statistics on covered roads. For such an investigative task, Computational Fluid Dynamics, the CFD offers ever stronger growing engineering tool. The k-ε turbulence model with extra source terms accounting for the effect of hier Applied Computational Fluid Dynamics buoyancy in turbulent mixing would be applied in such numerical approach. Similar principle in those sophisticated software, one can find[ in the closed set of coupled equations that are again discretised and solved onto a three-dimensional finite-volume Cartesian mesh. In the latest phases of on-going software development several general purpose computer-programs for analysis of fluid flow – were developed – that can handle both steady and transient flows. Anyhow, all of these research attempts (after their validation), can document a good capability of the numerical approaches used in investigative treating both the reactive flows as well as large-scale fluid flow – especially in enclosed traffic objects.