What is the coefficient of discharge of nozzle?

What is the coefficient of discharge of nozzle?

The discharge coefficient C for a flow nozzle is approximately 0.99 for Reynolds numbers greater than 106. At lower Reynolds numbers, because of greater energy loss subsequent to the nozzle throat, C values are lower. R: Reynolds number based on the pipe diameter D.

What is the coefficient of discharge formula?

How do I calculate discharge coefficient for an orifice flow? To calculate discharge coefficient: Multiply the hydraulic head by the acceleration due to gravity. Multiply the resultant by 2 .

What is meant by discharge coefficient?

Definition of coefficient of discharge : the ratio of the actual discharge to the ideal discharge, assuming unit coefficients of contraction and velocity, equal to the product of these coefficients.

What is the range of discharge coefficient?

The orifice discharge coefficients are in the range of 0.6-0.9 and are affected by the fluid viscosity and the size of the vena contracta in the orifice.

What is the function of the coefficient of venturi meter C?

Coefficient of Discharge of Venturimeter (Cd) ISO-5167 code provides the values of venturimeter discharge coefficients. For accurate flow measurement, normally straight length requirement upstream and downstream of venturimeter is specified.

What is the function of the coefficient of Venturi meter C?

What is coefficient of discharge in Venturi meter?

The effective discharge coefficient for venturi meters ranges from 0.9 to about unity (Streeter, 1951; American Society of Mechanical Engineers, 1983) with turbulent flow, and it varies with diameter ratio of throat to pipe.

Why is the coefficient of discharge greater than 1?

Plug in a coefficient for energy losses through turbulence and you have your formula. But you can see indeed that your coefficient can never be greater than one, because that would mean that you end up with more energy than you started with.

How is the velocity coefficient Cv the discharge?

Coefficient of Velocity(Cv) is defined as the ratio between the actual velocity of a jet of liquid at vena-contracta and the theoretical velocity of the jet. Co-efficient of contraction(Cc) is defined as the ratio of the area of the jet at vena-contracta to the area of the orifice.

Is discharge coefficient always less than 1?

Coefficient of discharge (Cd): It is the ratio of actual discharge to theoretical discharge. As in a pipe, frictional losses are presents therefore Qactual will always be less than Qtheoretical. Its value is always less than 1.

Why is Cd less than 1?

What is Coefficient of discharge : It is the ratio of actual flow rate to ideal flow rate. It is always less than one. Why is the actual flow rate always less than the ideal flow rate: Coz in the actual flow ,friction and frictional losses plays a major role and this frictional losses leads to decrease in flow rate.

Is discharge coefficient a constant?

Unlike the flow coefficient, discharge coefficient is dimensionless and almost constant value for any diameter of a single model. Manufacturers often provide the discharge coefficient of the valve in fully open position, maximum discharge.

Can the coefficient of discharge be 1?

In practice, the discharge coefficient cannot be greater than one. This is a fact. The error may be in compensating the values ​​of the variables in the equation. Verifies units, values, and homogeneity of area values.