Determination of the Influence of Oncoming Flow on the Vortex Zones at the Inlet of the Suction Sockets. Part 2. Axisymmetric Problem

Abstract

This study discusses the aspects of constructing a computational algorithm for calculating circular suction sockets under oncoming flow conditions using the discrete vortex ring method. Flow patterns are presented for different ratios of oncoming and suction airflow velocities. The dependencies of the characteristic dimensions of the vortex zones arising at the inlet of the suction sockets on the velocity of the oncoming flow and the length and angle of inclination of the socket have been determined. Furthermore, equations are derived for the critical velocity of the oncoming flow, at which the flow separation mode for vortex zone 1 changes from separation inside the socket to outside it. The results obtained can be used to design local suction systems profiled according to the revealed outlines of the vortex zones.