Numerical Studies of the Aerodynamic Features of Dead-end Entries with Side Junction

¹ Federal State Institution “National Rescue Center” Ministry of Emergency Situations of Russia, 654044, Novokuznetsk, Prospect Aviatorov, 54, Russia
² Siberian State Industrial University, 654007, Novokuznetsk, Kirova Str., 42, Russia
³ Mining Institute of the Ural Branch of the Russian Academy of Sciences, 614007, Perm, Siberian Str., 78a, Russian Federation
⁴ T.F. Gorbachev Kuzbass State Technical University, Department of an aerology, labor protection and nature, 650000 Kemerovo, 28 Vesennya St., Russian Federation

Abstract

Investigations of aerodynamic processes occurring in dead-end short entriesaired by turbulent diffusion have been performed. The numerical simulation of the processes of air movement through the entry, flow stalling at the junction with the dead-end entry (for side junction), and the formation of vortices at the dead end have been carried out. The study has been done for a wide range of air flows submitted for computation of air consumption and for various geometric parameters of the dead-end entry. The sizes of the vortex structures and the flow rates in the dead endshave been determined. Based on the results of processing the simulation data, we obtained graphs of the dependences between the length of the ventilated zone of the dead end and its height and width.