How do you find the coefficient of discharge?
The discharge coefficient of an orifice or nozzle is defined as the ratio of the actual to theoretical flow rate:
- Cd=Measured Flow RateTheoretical Flow Rate (1)
- η=σΔp12ρ¯V2 (6)
- ξ=σΔp¯Δp (7)
What is discharge coefficient of an orifice?
Summary. 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 is the usual limit of the coefficient of discharge?
The range for coefficient of discharge (Cd) for a venturimeter is. 0.61 to 0.79. 0.72 to 0.89.
What is the value of coefficient of discharge for Venturimeter?
The discharge coefficient of a Venturi meter is typically 0.985, but may be even higher if the convergent section is machined.
What is the coefficient of discharge for a 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 discharge coefficient is high in Venturi meter than orifice meter?
In Venturi meter losses are less so coefficient of discharge is higher whereas in orifice meter due to no convergent and divergent cones there are more losses and hence its coefficient of discharge is less.In venturi meter losses are low due to steamline shape of the diffuser and the pressure gradient is not abrupt as …
What is the value of coefficient of discharge for Venturi meter?
What is the value of coefficient of discharge for Venturi meter and orifice meter?
In Venturi meter; the value of coefficient of discharge can be up to 0.98, it is relatively high. In Orifice meter; the value of coefficient of discharge is in the neighborhood of 0.6, it is relatively low.
