Hydrodynamic of the Vacuum Valve

The problem of weak discontinuity in operation of vacuum valve is considered from an experimental and theoretical point of view. A model of gas flow as a function of two variable gas mass n and time t is created. The model allows you to define a point on the time axis where the continuity of the gas mass flow function breaks and define the discontinuity parameters. A model of operation of the vacuum valve as a gas flow control device was built based on the experimental data. It is shown that an inlet area inside the valve through which gas flow passes has the property of a weak discontinuity, provided that the area is considered as a time function. It is shown how this property is transmitted to a gas discharge function. The described actions result in the statement that the gas discharge function has the properties of weak discontinuity over mass and time variables. The theoretical conclusions were verified on a simple vacuum set with air overflow between two vessels, provided that the gas flow is controlled by the valve. It found a single point on the time axis where the gas discharge function has two weak discontinuities over mass and time variables simultaneously. The phenomenon of weak discontinuity in gas flow was recorded for the first time under such experimental conditions.