MATHEMATICAL MODELING OF AIR DISTRIBUTION DYNAMICS FROM THE PISTON ACTION OF TRAINS IN LONG RAILWAY TUNNELS
I. V. Lugin
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk Russia
Keywords: Long railway tunnel, piston action of trains, calculation of static air distribution
Abstract
The results of calculating air exchange from the piston action of trains in a long railway tunnel by computational aerodynamics methods in a stationary and non-stationary formulation are compared. The errors of determining air exchange in a stationary formulation are revealed. The correctness of applying the models of network static air distribution with quasi-dynamic models of the piston action of trains for calculating tunnel ventilation is justified.
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