NUMERICAL INVESTIGATION OF FLOW NEAR A ROUND EXHAUST CHANNEL SCREENED BY AN ANNULAR SWIRLED JET

Based on the Reynolds equations closed with the aid of the model of shear stresses transfer and of the model with a correction for curvature and rotation, numerical simulation of air fl ow near a round exhaust hole screened by an annular swirled jet was carried out. The infl uence of the swirling intensity on the air fl ow velocity fi eld in the range of action of an exhaust device and its range of action at different fl ow rate ratios of the sucked and infl owing air and also at different distances of the circular hole from the axis has been determined. The results obtained will be of use in designing effective systems of exhaust ventilation of lowered energy capacity.
   
Author:  M. S. Gritskevich, A. K. Logachev, and K. I. Logachev
Keywords:  exhaust ventilation, vertical suction, Reynolds equations, model of shear stresses transfer, correction for curvature and rotation
Page:  468