Abstract
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 flow near a round exhaust hole screened by an annular swirled jet was carried out. The influence of the swirling intensity on the air flow velocity field in the range of action of an exhaust device and its range of action at different flow rate ratios of the sucked and inflowing 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.
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