The Properties of Gas Flows for Different Flow Conditions Through Laval Nozzles

For all possible types of gas flow through a Laval nozzle, a group of “operating” conditions are distinguished with particular properties characteristic for these conditions, which open up the possibility of effectively solving the problems involved in designing instruments for measuring gas flow rate and their metrological facilities.__________Translated from Izmeritel’naya Tekhnika, No. 4, pp. 40–44, April, 2005.     

The Initial Equations and the Equations for Measuring the Mass and Volume Flow Rates of a Gas

A mathematical model of the flow of a gas in Laval nozzles is analyzed. The model is used to obtain equations for measuring the mass and volume flow rates of a gas.__________Translated from Izmeritel’naya Tekhnika, No. 4, pp. 44–48, April, 2005.     

The Area of Application of Laval Nozzles in Flow-Rate Measurement Technique

Using examples of their use in standard and working instruments for measuring mass flow rate and a variety of gas volume flow rates, it is shown that critical nozzles and, particularly the Laval nozzle, can occupy an important place in the system of metrological facilities for this form of measurement.__________Translated from Izmeritel’naya Tekhnika, No. 4, pp. 48–52, April, 2005.