Table of Contents
What is the formula for water discharge?
Discharge = V x D x W If length is measured in feet and time in seconds, Discharge has units of feet3/sec or cubic feet per second (cfs). Depth times Width gives the cross-sectional area. The shape of the channel is important because of the reduction in velocity due to friction along the channel margins.
What is nozzle discharge?
Nozzle Discharge Calculates the flow rate from a nozzle for a specific pressure and flow rate.
What is the formula for discharge coefficient?
In Equation (14.18) the discharge coefficient C d = ( 2 / 3 ) ( 2 g / 3 ) = 1.705 in metric units and, in Equation (14.19), C ′ d = ( 2 / 3 ) 2 / 3 = 0.544 in non-dimensional units. If the flow passes through critical depth over a weir crest then it might appear that Cd would always take that value.
How do you calculate volume of discharge?
More specifically, water discharge, which is the volume of water moving through the cross section of a stream or river during a particular unit of time, is typically computed by multiplying the area of water in a channel cross section by the average velocity of the water in that cross section.
How do you calculate the coefficient of discharge for a nozzle?
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 nozzle discharge coefficient?
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 …
How do you calculate the discharge of a water pump?
To calculate the discharge head, we determine the total head from the characteristic curve and subtract that value from the pressure head at the suction, this gives the pressure head at the discharge which we then convert to pressure.
How do you calculate nozzle reaction?
How to Calculate Nozzle Reaction. Calculating the Nozzle Reaction for a 1.25-inch-Bore-Diameter Nozzle The solid bore discharge formula is gallons per minute (gpm) = 29.71 D² NP¹/². The formula can be rewritten to solve for the unknown, nozzle pressure:
What is the formula for solid bore discharge?
The solid bore discharge formula is gallons per minute (gpm) = 29.71 D² NP¹/². The formula can be rewritten to solve for the unknown, nozzle pressure:
How do nozzles and orifices work?
Nozzles and orifices are often used to deliberately reduce pressure, restrict flow or to measure flow rate. In the case of a simple concentric restriction orifice the fluid is accelerated as it passes through the orifice, reaching the maximum velocity a short distance downstream of the orifice itself (the Vena Contracta).
How do you calculate the counterweight of a gas nozzle?
The counterweight can be determined by calculating the nozzle pressure and then the nozzle reactive force. Use the bore diameter of the nozzle and the flow in gallons per minute to calculate the nozzle pressure.