Mridul Sharma
Indian Institute of Information Technology (IIIT), Bhopal
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Ishita Goyal
Meerut Institute of Engineering and Technology (MIET), Meerut
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11 Other formulas that you can solve using the same Inputs

Conversion factor when flow velocity is given
conversion factor=((flow velocity*roughness coefficient of conduit surface)/((energy loss^(1/2))*hydraulic radius^(2/3))) GO
Hydraulic radius when flow velocity is given
hydraulic radius=((flow velocity*roughness coefficient of conduit surface)/(conversion factor*energy loss^(1/2)))^(3/2) GO
Roughness coefficient when flow velocity is given
roughness coefficient of conduit surface=(conversion factor*hydraulic radius^(2/3)*energy loss^(1/2))/flow velocity GO
Energy loss when flow velocity is given
energy loss=((flow velocity*roughness coefficient of conduit surface)/(conversion factor*hydraulic radius^(2/3)))^2 GO
Inside diameter when full flow velocity in sewer is given
Inner Diameter=((flow velocity*roughness coefficient of conduit surface)/(0.59*energy loss^(1/2)))^(3/2) GO
Inside diameter when flow quantity for a full flowing sewer is given
Inner Diameter=((water flow*roughness coefficient of conduit surface)/(0.463*energy loss^(1/2)))^(3/8) GO
Coefficient of roughness when full flow velocity in sewer is given
roughness coefficient of conduit surface=(0.59*Inner Diameter^(2/3)*energy loss^(1/2))/flow velocity GO
Energy loss when full flow velocity in sewer is given
energy loss=((flow velocity*roughness coefficient of conduit surface)/(0.59*Inner Diameter^(2/3)))^2 GO
Full flow velocity in sewer
flow velocity=(0.59*Inner Diameter^(2/3)*energy loss^(1/2))/roughness coefficient of conduit surface GO
Coefficient of roughness when flow quantity for a full flowing sewer is given
roughness coefficient of conduit surface=(0.463*energy loss^(1/2)*Inner Diameter^(8/3))/water flow GO
Flow quantity for a full flowing sewer
water flow=(0.463*energy loss^(1/2)*Inner Diameter^(8/3))/roughness coefficient of conduit surface GO

10 Other formulas that calculate the same Output

Velocity of flow at the outlet of the nozzle
flow velocity=sqrt(2*[g]*Total Head at Entrance/(1+(4*Coefficient of Friction*Length of Pipe*(nozzle area at outlet^2)/(Diameter of Pipe*(Cross sectional area of Pipe^2))))) GO
Flow Velocity when Power Lost is Given
flow velocity=Absolute Velocity of the Issuing Jet-sqrt((Power Loss/(density of fluid*Rate of flow*0.5))) GO
Full flow velocity in sewer
flow velocity=(0.59*Inner Diameter^(2/3)*energy loss^(1/2))/roughness coefficient of conduit surface GO
Flow Velocity when Thrust on the Propeller is Given
flow velocity=-(Thrust force/(Water Density*Rate of flow))+Absolute Velocity of the Issuing Jet GO
Manning’s Equation
flow velocity=(1/Manning’s Roughness Coefficient)*(hydraulic radius)^2/3*(Bed Slope)^1/2 GO
Flow Velocity when Rate of Flow through Propeller is Given
flow velocity=(8*Rate of flow/(pi*Diameter ^2))-Absolute Velocity of the Issuing Jet GO
Flow Velocity when Theoretical Propulsive Efficiency is Given
flow velocity=Absolute Velocity of the Issuing Jet/(2/Efficiency -1) GO
Velocity of flow at the outlet of the nozzle for efficiency and head
flow velocity=sqrt(Efficiency *2*[g]*Total Head at Entrance) GO
Velocity when water flow equation is given
flow velocity=water flow/Cross sectional area GO
Flow velocity in Continuous Discharge Measurements
flow velocity=0.00198*Water Depth^1.3597 GO

Flow velocity using Manning's formula Formula

flow velocity=(conversion factor*hydraulic radius^(2/3)*energy loss^(1/2))/roughness coefficient of conduit surface
V=(C*R^(2/3)*S^(1/2))/n
More formulas
Roughness coefficient when flow velocity is given GO
Hydraulic radius when flow velocity is given GO
Energy loss when flow velocity is given GO
Conversion factor when flow velocity is given GO
Water flow equation GO
Area when water flow equation is given GO
Velocity when water flow equation is given GO

How do you use Manning's equation?

One common application of the equation is to compute the full pipe capacity for a given diameter and pipe slope. This is done with the Manning equation by setting the slope equal to the slope of the pipe, and then computing the resulting flow rate for a given pipe diameter.

How to Calculate Flow velocity using Manning's formula?

Flow velocity using Manning's formula calculator uses flow velocity=(conversion factor*hydraulic radius^(2/3)*energy loss^(1/2))/roughness coefficient of conduit surface to calculate the flow velocity, The Flow velocity using Manning's formula formula calculates the rate of flow of water when we have a prior info of the roughness coefficient of the pipe material used , energy loss due to it and hydraulic radius. flow velocity and is denoted by V symbol.

How to calculate Flow velocity using Manning's formula using this online calculator? To use this online calculator for Flow velocity using Manning's formula, enter conversion factor (C), hydraulic radius (R), energy loss (S) and roughness coefficient of conduit surface (n) and hit the calculate button. Here is how the Flow velocity using Manning's formula calculation can be explained with given input values -> 1.510882 = (1.486*0.609600000002438^(2/3)*2^(1/2))/1.

FAQ

What is Flow velocity using Manning's formula?
The Flow velocity using Manning's formula formula calculates the rate of flow of water when we have a prior info of the roughness coefficient of the pipe material used , energy loss due to it and hydraulic radius and is represented as V=(C*R^(2/3)*S^(1/2))/n or flow velocity=(conversion factor*hydraulic radius^(2/3)*energy loss^(1/2))/roughness coefficient of conduit surface. conversion factor is to account for change from metric units used in development of the formula, hydraulic radius is the ratio of the cross-sectional area of a channel or pipe in which a fluid is flowing to the wet perimeter of the conduit, energy loss is the loss of energy of flowing water and roughness coefficient of conduit surface is coefficient dependent on roughness of conduit surface.
How to calculate Flow velocity using Manning's formula?
The Flow velocity using Manning's formula formula calculates the rate of flow of water when we have a prior info of the roughness coefficient of the pipe material used , energy loss due to it and hydraulic radius is calculated using flow velocity=(conversion factor*hydraulic radius^(2/3)*energy loss^(1/2))/roughness coefficient of conduit surface. To calculate Flow velocity using Manning's formula, you need conversion factor (C), hydraulic radius (R), energy loss (S) and roughness coefficient of conduit surface (n). With our tool, you need to enter the respective value for conversion factor, hydraulic radius, energy loss and roughness coefficient of conduit surface and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate flow velocity?
In this formula, flow velocity uses conversion factor, hydraulic radius, energy loss and roughness coefficient of conduit surface. We can use 10 other way(s) to calculate the same, which is/are as follows -
  • flow velocity=water flow/Cross sectional area
  • flow velocity=(0.59*Inner Diameter^(2/3)*energy loss^(1/2))/roughness coefficient of conduit surface
  • flow velocity=(1/Manning’s Roughness Coefficient)*(hydraulic radius)^2/3*(Bed Slope)^1/2
  • flow velocity=0.00198*Water Depth^1.3597
  • flow velocity=sqrt(2*[g]*Total Head at Entrance/(1+(4*Coefficient of Friction*Length of Pipe*(nozzle area at outlet^2)/(Diameter of Pipe*(Cross sectional area of Pipe^2)))))
  • flow velocity=sqrt(Efficiency *2*[g]*Total Head at Entrance)
  • flow velocity=-(Thrust force/(Water Density*Rate of flow))+Absolute Velocity of the Issuing Jet
  • flow velocity=(8*Rate of flow/(pi*Diameter ^2))-Absolute Velocity of the Issuing Jet
  • flow velocity=Absolute Velocity of the Issuing Jet-sqrt((Power Loss/(density of fluid*Rate of flow*0.5)))
  • flow velocity=Absolute Velocity of the Issuing Jet/(2/Efficiency -1)
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