Sergiy V. Calculation of Characteristics of Vortical Valves in View of Friction on Walls of Vortical Chamber

There are received the further development methods of calculation and designing of the vortical valves used as executive devices in control systems by streams of continuous environments. Thus solve the tasks connected to increase of reliability and durability of these systems. On the basis of experimental researches by definition of the moment of friction of a rotating liquid about walls of the vortical chamber was communication between the law of resistance and distribution of tangents of pressure on walls is established. The received dependences have been used at mathematical modelling the processes proceeding at current of the twirled stream in the vortical valve. In com-parison with a technique based on analogy to a flow of a smooth flat plate, the offered model gives the best concurrence to experiment, not resorting to artificial selection of such value of local factor of friction or turbulent viscosity at which satisfactory concurrence settlement and experimental data is reached. On the basis ofthe analysis of results of numerical experiment the existing technique of engi-neering calculation of the vortical valves has been developed and added, allowing to receive an optimum ratio of their basic parameters. On the basis of the developed technique trial samples of vortical valves for system of automatic control of sampling of fulfilled gases EIF, and for system пневмозолоудаления are designed and made in structure of the power unit " Kurahovo PS". Key words: jet technical equipment, the vortical valve, mathematical model, the target characteristic, factor of friction, the vortical chamber.