Merttt said:Why coefficient of velocity of venturi nozzle is too big compared to orifice and nozzle.
A Venturi, Orifice, and Nozzle are all types of flow meters used to measure the flow rate of fluids. They work by creating a constriction in the flow of the fluid, causing a pressure drop which can then be measured and used to calculate the flow rate.
The main difference between these flow meters is the shape of the constriction they create. A Venturi has a gradual reduction in diameter, an Orifice has a sharp-edged hole, and a Nozzle has a converging and then diverging shape.
The accuracy of these flow meters can vary depending on factors such as the type of fluid being measured, the size and shape of the constriction, and the installation conditions. Generally, Venturi meters have the highest accuracy, followed by Orifice meters, and then Nozzle meters.
The main advantage of these flow meters is their simplicity and low cost compared to other types of flow meters. However, they may not be suitable for measuring very low flow rates, and their accuracy can be affected by changes in fluid properties or installation conditions.
The choice of flow meter will depend on factors such as the type of fluid, flow rate, required accuracy, and installation conditions. It is important to consult with a flow meter expert to determine the best option for your specific application.