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Velocity in a Partially Running Sewer is the speed of flow when the sewer isn't fully filled, influenced by depth and slope. Check FAQs
Vs=V((Nnp)(rpfRrf)23sss)
Vs - Velocity in a Partially Running Sewer?V - Velocity While Running Full?N - Roughness Coefficient for Running Full?np - Roughness Coefficient Partially Full?rpf - Hydraulic Mean Depth for Partially Full?Rrf - Hydraulic Mean Depth while Running Full?ss - Bed Slope of Partial Flow?s - Bed Slope of Channel?

Self Cleansing Velocity given Bed Slope for Partial Flow Example

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With units
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Here is how the Self Cleansing Velocity given Bed Slope for Partial Flow equation looks like with Values.

Here is how the Self Cleansing Velocity given Bed Slope for Partial Flow equation looks like with Units.

Here is how the Self Cleansing Velocity given Bed Slope for Partial Flow equation looks like.

4.7966Edit=6.01Edit((0.74Edit0.9Edit)(3.2Edit5.2Edit)230.0018Edit0.001Edit)
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Self Cleansing Velocity given Bed Slope for Partial Flow Solution

Follow our step by step solution on how to calculate Self Cleansing Velocity given Bed Slope for Partial Flow?

FIRST Step Consider the formula
Vs=V((Nnp)(rpfRrf)23sss)
Next Step Substitute values of Variables
Vs=6.01m/s((0.740.9)(3.2m5.2m)230.00180.001)
Next Step Prepare to Evaluate
Vs=6.01((0.740.9)(3.25.2)230.00180.001)
Next Step Evaluate
Vs=4.79657262631529m/s
LAST Step Rounding Answer
Vs=4.7966m/s

Self Cleansing Velocity given Bed Slope for Partial Flow Formula Elements

Variables
Functions
Velocity in a Partially Running Sewer
Velocity in a Partially Running Sewer is the speed of flow when the sewer isn't fully filled, influenced by depth and slope.
Symbol: Vs
Measurement: SpeedUnit: m/s
Note: Value should be greater than 0.
Velocity While Running Full
Velocity while Running Full refers to the speed of fluid flow in a pipe when it's completely filled, influenced by pipe slope and roughness.
Symbol: V
Measurement: SpeedUnit: m/s
Note: Value should be greater than 0.
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.
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.
Bed Slope of Partial Flow
Bed Slope of Partial Flow means the slope at which partial flow is occurring.
Symbol: ss
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Bed Slope of Channel
Bed Slope of Channel refers to the gradient or incline of a channel's bed, influencing the velocity and direction of water flow, typically measured as a ratio or percentage.
Symbol: s
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
sqrt
A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.
Syntax: sqrt(Number)

Other Formulas to find Velocity in a Partially Running Sewer

​Go Self Cleansing Velocity using Ratio of Bed Slope
Vs=V((Nnp)(rpfRrf)23S)
​Go Self Cleansing Velocity given Hydraulic Mean Depth Ratio
Vs=V(Nnp)(R)16

Other formulas in Flow Velocity through Circular Sewer category

​Go Velocity Ratio given Ratio of Bed Slope
νsVratio=(Nnp)(rpfRrf)23S
​Go Velocity Ratio given Hydraulic Mean Depth Ratio
νsVratio=((Nnp)(R)16)

How to Evaluate Self Cleansing Velocity given Bed Slope for Partial Flow?

Self Cleansing Velocity given Bed Slope for Partial Flow evaluator uses Velocity in a Partially Running Sewer = Velocity While Running Full*((Roughness Coefficient for Running Full/Roughness Coefficient Partially Full)*(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(2/3)*sqrt(Bed Slope of Partial Flow/Bed Slope of Channel)) to evaluate the Velocity in a Partially Running Sewer, Self Cleansing Velocity given Bed Slope for Partial Flow formula is defined is as the minimum speed at which fluid must flow in a sewer to prevent sediment deposition and maintain a clear path. Velocity in a Partially Running Sewer is denoted by Vs symbol.

How to evaluate Self Cleansing Velocity given Bed Slope for Partial Flow using this online evaluator? To use this online evaluator for Self Cleansing Velocity given Bed Slope for Partial Flow, enter Velocity While Running Full (V), Roughness Coefficient for Running Full (N), Roughness Coefficient Partially Full (np), Hydraulic Mean Depth for Partially Full (rpf), Hydraulic Mean Depth while Running Full (Rrf), Bed Slope of Partial Flow (ss) & Bed Slope of Channel (s) and hit the calculate button.

FAQs on Self Cleansing Velocity given Bed Slope for Partial Flow

What is the formula to find Self Cleansing Velocity given Bed Slope for Partial Flow?
The formula of Self Cleansing Velocity given Bed Slope for Partial Flow is expressed as Velocity in a Partially Running Sewer = Velocity While Running Full*((Roughness Coefficient for Running Full/Roughness Coefficient Partially Full)*(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(2/3)*sqrt(Bed Slope of Partial Flow/Bed Slope of Channel)). Here is an example- 159.8858 = 6.01*((0.74/0.9)*(3.2/5.2)^(2/3)*sqrt(bed_slope_of_partial_flow/0.001)).
How to calculate Self Cleansing Velocity given Bed Slope for Partial Flow?
With Velocity While Running Full (V), Roughness Coefficient for Running Full (N), Roughness Coefficient Partially Full (np), Hydraulic Mean Depth for Partially Full (rpf), Hydraulic Mean Depth while Running Full (Rrf), Bed Slope of Partial Flow (ss) & Bed Slope of Channel (s) we can find Self Cleansing Velocity given Bed Slope for Partial Flow using the formula - Velocity in a Partially Running Sewer = Velocity While Running Full*((Roughness Coefficient for Running Full/Roughness Coefficient Partially Full)*(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(2/3)*sqrt(Bed Slope of Partial Flow/Bed Slope of Channel)). This formula also uses Square Root Function function(s).
What are the other ways to Calculate Velocity in a Partially Running Sewer?
Here are the different ways to Calculate Velocity in a Partially Running Sewer-
  • Velocity in a Partially Running Sewer=Velocity While Running Full*((Roughness Coefficient for Running Full/Roughness Coefficient Partially Full)*(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(2/3)*sqrt(Bed Slope Ratio))OpenImg
  • Velocity in a Partially Running Sewer=Velocity While Running Full*(Roughness Coefficient for Running Full/Roughness Coefficient Partially Full)*(Hydraulic Mean Depth Ratio)^(1/6)OpenImg
  • Velocity in a Partially Running Sewer=Velocity While Running Full*(Roughness Coefficient for Running Full/Roughness Coefficient Partially Full)*(Hydraulic Mean Depth for Partially Full/Hydraulic Mean Depth while Running Full)^(1/6)OpenImg
Can the Self Cleansing Velocity given Bed Slope for Partial Flow be negative?
No, the Self Cleansing Velocity given Bed Slope for Partial Flow, measured in Speed cannot be negative.
Which unit is used to measure Self Cleansing Velocity given Bed Slope for Partial Flow?
Self Cleansing Velocity given Bed Slope for Partial Flow is usually measured using the Meter per Second[m/s] for Speed. Meter per Minute[m/s], Meter per Hour[m/s], Kilometer per Hour[m/s] are the few other units in which Self Cleansing Velocity given Bed Slope for Partial Flow can be measured.
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