Research of the fluid flow in the flow cavity of elements of pneumatic-hydraulic systems

The paper discusses the issues related to simulation of the fluid flow in the working cavity of ball valves with different types of gate design: with turned and stamped ball. Special attention is paid to defining the characteristics of flow resistance depending on rotation angle of the regulating element. Mathematical modeling of the gas flow process in examined types of valves has been carried out; flow pressures and velocities in the working cavity of ball valves have been determined. The analysis of the obtained data allowed to estimate the accuracy of the computation method based on a comparison with the published experimental data. Recommendations were given on using the ball valves with turned and stamped ball.