Roughness Coefficient while Running Full given Proportionate Velocity Formula

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The Roughness Coefficient for Running Full accounts for uniform surface resistance affecting flow velocity and friction loss. Check FAQs
N=Pvnp(rpfRrf)23
N - Roughness Coefficient for Running Full?Pv - Proportionate Velocity?np - Roughness Coefficient Partially Full?rpf - Hydraulic Mean Depth for Partially Full?Rrf - Hydraulic Mean Depth while Running Full?

Roughness Coefficient while Running Full given Proportionate Velocity Example

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Here is how the Roughness Coefficient while Running Full given Proportionate Velocity equation looks like with Values.

Here is how the Roughness Coefficient while Running Full given Proportionate Velocity equation looks like with Units.

Here is how the Roughness Coefficient while Running Full given Proportionate Velocity equation looks like.

0.9516Edit=0.765Edit0.9Edit(3.2Edit5.2Edit)23
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Roughness Coefficient while Running Full given Proportionate Velocity Solution

Follow our step by step solution on how to calculate Roughness Coefficient while Running Full given Proportionate Velocity?

FIRST Step Consider the formula
N=Pvnp(rpfRrf)23
Next Step Substitute values of Variables
N=0.7650.9(3.2m5.2m)23
Next Step Prepare to Evaluate
N=0.7650.9(3.25.2)23
Next Step Evaluate
N=0.951640364804476
LAST Step Rounding Answer
N=0.9516

Roughness Coefficient while Running Full given Proportionate Velocity Formula Elements

Variables
Roughness Coefficient for Running Full
The Roughness Coefficient for Running Full accounts for uniform surface resistance affecting flow velocity and friction loss.
Symbol: N
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Proportionate Velocity
Proportionate Velocity is ratio of velocity when water is partially full to velocity when water is totally full.
Symbol: Pv
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Roughness Coefficient Partially Full
Roughness Coefficient Partially Full means roughness coefficient of pipe while running partially full.
Symbol: np
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Hydraulic Mean Depth for Partially Full
Hydraulic Mean Depth for Partially Full refers to the cross-sectional area of flow divided by the wetted perimeter, adapting to varying water levels.
Symbol: rpf
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Hydraulic Mean Depth while Running Full
Hydraulic Mean Depth while Running Full refers to the ratio of the pipe's full cross-sectional area to its full wetted perimeter.
Symbol: Rrf
Measurement: LengthUnit: m
Note: Value should be greater than 0.

Other formulas in Proportionate Velocity category

​Go Proportionate Velocity given Roughness Coefficient
Pv=(Nnp)(rpfrpf)23
​Go Proportionate Velocity given Central Angle
Pv=(1-(360π180)sin(central)2πcentral)23
​Go Proportionate Velocity when Roughness Coefficient does not Vary with Depth
Pv=(rpfRrf)23
​Go Proportionate Velocity given Velocity while Running Partially Full
Pv=VsV

How to Evaluate Roughness Coefficient while Running Full given Proportionate Velocity?

Roughness Coefficient while Running Full given Proportionate Velocity evaluator uses Roughness Coefficient for Running Full = (Proportionate Velocity*Roughness Coefficient Partially Full)/(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(2/3) to evaluate the Roughness Coefficient for Running Full, The Roughness Coefficient while Running Full given Proportionate Velocity calculates the roughness coefficient when we have prior information of other parameters. Roughness Coefficient for Running Full is denoted by N symbol.

How to evaluate Roughness Coefficient while Running Full given Proportionate Velocity using this online evaluator? To use this online evaluator for Roughness Coefficient while Running Full given Proportionate Velocity, enter Proportionate Velocity (Pv), Roughness Coefficient Partially Full (np), Hydraulic Mean Depth for Partially Full (rpf) & Hydraulic Mean Depth while Running Full (Rrf) and hit the calculate button.

FAQs on Roughness Coefficient while Running Full given Proportionate Velocity

What is the formula to find Roughness Coefficient while Running Full given Proportionate Velocity?
The formula of Roughness Coefficient while Running Full given Proportionate Velocity is expressed as Roughness Coefficient for Running Full = (Proportionate Velocity*Roughness Coefficient Partially Full)/(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(2/3). Here is an example- 0.746385 = (0.765*0.9)/(3.2/5.2)^(2/3).
How to calculate Roughness Coefficient while Running Full given Proportionate Velocity?
With Proportionate Velocity (Pv), Roughness Coefficient Partially Full (np), Hydraulic Mean Depth for Partially Full (rpf) & Hydraulic Mean Depth while Running Full (Rrf) we can find Roughness Coefficient while Running Full given Proportionate Velocity using the formula - Roughness Coefficient for Running Full = (Proportionate Velocity*Roughness Coefficient Partially Full)/(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(2/3).
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