НАУЧНИ ТРУДОВЕ НА РУСЕНСКИЯ УНИВЕРСИТЕТ – 2016, том 55, серия 1.2 - 190 - SAT-9.3-1-HP-15 Experimental study of interaction of isothermal jet with suction opening Ivan Denev, Petko Tsankov, Rositsa Velichkova Abstract: In current work is analysed the results of own experiments on the reaction of a turbulent jet with suction opening. It is given a geometry of the flow and characteristics distinction of the flow rate and amount of movement. It is made a comparison with the distribution of free turbulent jet leakage at the same initial conditions. Key words: turbulent jet, suction opening, flow rate INTRODUCTION The use of local exhaust ventilation is the safest option for cleaning the air of harmful emitted in different technological processes. Industrial local exhaust ventilation provide controls on capture, targeting and removal of contaminated air flow from working areas and ensure clean breathing zone of the operators of the machines. Harmful particles falls in the supply air stream and with it are directed towards the suction opening [2]. In current work are processed experimental data of the distribution of isothermal turbulent jet and the influence that has the existence of a suction opening. SUMMARY The aim of this work is to analyze the results of own experiments on the interaction of a turbulent jet with suction opening. It is given a geometry of the flow and characteristics distinction of the flow rate and amount of movement. It is made a comparison with the distribution of free turbulent jet leakage at the same initial conditions. For this purpose was developed test-rig for conducting an experiments for interaction of turbulent jet with suction opening, shown at fig. 1. The study area is further increased for better performance. Fig. 1 Scheme of test-rig for experimental study