Table of Contents
- 1 What is the relation between hydraulic coefficients?
- 2 What is hydraulic Coefficient of an orifice?
- 3 What is meant by coefficient of discharge CD?
- 4 What is meant by coefficient of velocity?
- 5 What are hydraulic coefficients name them?
- 6 Why do we use coefficient of discharge?
- 7 What is the hydraulic coefficient of Discharge ( CD )?
- 8 What is the value of the coefficient of contraction?
What is the relation between hydraulic coefficients?
Coefficient of contraction is defined as the ratio of the area of jet at Vena contracta to the area of orifice (theoretical area). It is denoted by Cc.
What is hydraulic Coefficient of an orifice?
Co-efficient of Contraction (Cc): It is the ratio of area of jet at vena-contracta to that of area of orifice. The value of Cc varies from 0.61 to 0.69 depending upon the shape and size of orifice.
What is coefficient of discharge in hydraulics?
In a nozzle or other constriction, the discharge coefficient (also known as coefficient of discharge or efflux coefficient) is the ratio of the actual discharge to the ideal discharge, i.e., the ratio of the mass flow rate at the discharge end of the nozzle to that of an ideal nozzle which expands an identical working …
What is CD CC and CV?
Coefficient of discharge (Cd) = Coeff. of flow/velocity (Cv) x Coeff of contraction (Cc). of flow/velocity (Cv) , you will be able to calculate coeff of discharge (Cd), once Cc is known. Obviously Cc changes depending on the shape of the jet at vena contract however a value between 0.61 – 0.64 is usually accepted.
What is meant by coefficient of discharge CD?
Coefficient of discharge is stated as the ratio between the actual flow discharge and theoretical flow discharge. It is symbolized by Cd and its value is different for each fluid depending on the kind of measurement of flow.
What is meant by coefficient of velocity?
: the ratio of the actual velocity to the theoretical velocity of a fluid jet.
What is orifice Coefficient?
The discharge coefficients are used to measure the flow and pressure loss behaviour of nozzles. Orifices and nozzles can be used to reduce pressure or to measure flow rate.
What is the purpose of coefficient of discharge?
The discharge coefficient is a dimensionless number used to characterise the flow and pressure loss behaviour of nozzles and orifices in fluid systems. Orifices and nozzles are typically used to deliberately reduce pressure, restrict flow or to measure flow rate.
What are hydraulic coefficients name them?
Following are three hydraulic coefficients of orifice: Coefficient of Contraction (Cc)…
- Coefficient of Contraction (Cc)
- Coefficient of Velocity (Cv)
- Coefficient of discharge (Cd)
Why do we use coefficient of discharge?
The discharge coefficient can be thought of as a correction factor for “real” flow meter devices. It is typically determined experimentally for different flow meters. Correlation equations can be used to calculate the real “corrected” flow rate through a given meter.
What is the importance of velocity coefficient?
The coefficients of velocity and discharge are necessary to accurately predict flow rates from orifices.
Which is the correct definition of hydraulic coefficient?
Hydraulic Coefficients include Coefficient of contraction, Coefficient of velocity, Coefficient of discharge and Coefficient of resistance. The following are the hydraulic coefficients: 1. Coefficient of contraction (Cc). It is defined as the ratio of area of jet at *vena contracta (ac) to the area of orifice (a).
What is the hydraulic coefficient of Discharge ( CD )?
Coefficient of discharge (Cd) When flow takes place through an orifice from the supply tank, the water jet leaving the orifice gets contracted at the downstream of the orifice and the point where it gets the maximum contraction is called as vena-contracta. Following are three hydraulic coefficients of orifice:
What is the value of the coefficient of contraction?
Coefficient of contraction is defined as the ratio of the area of jet at Vena contracta to the area of orifice (theoretical area). It is denoted by Cc. The value of Cc varies with the available head of liquid and shape, size of orifice. In general for an orifice Cc = 0.61 to .69.
How is the coefficient of contraction related to area of orifice?
Coefficient of contraction Coefficient of contraction is defined as the ratio of the area of jet at Vena contracta to the area of orifice (theoretical area). It is denoted by Cc. Mathematically, Cc = Area of jet at Vena contracta/ area of orifice