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The Critical velocity is the greatest velocity with which a fluid can flow through a given conduit without becoming turbulent. Check FAQs
Vc=(QeWtdc)
Vc - Critical Velocity?Qe - Environmental Discharge?Wt - Width of Throat?dc - Critical Depth?

Critical Velocity given Discharge through Control Section Example

With values
With units
Only example

Here is how the Critical Velocity given Discharge through Control Section equation looks like with Values.

Here is how the Critical Velocity given Discharge through Control Section equation looks like with Units.

Here is how the Critical Velocity given Discharge through Control Section equation looks like.

5.0662Edit=(39.82Edit3Edit2.62Edit)
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Critical Velocity given Discharge through Control Section Solution

Follow our step by step solution on how to calculate Critical Velocity given Discharge through Control Section?

FIRST Step Consider the formula
Vc=(QeWtdc)
Next Step Substitute values of Variables
Vc=(39.82m³/s3m2.62m)
Next Step Prepare to Evaluate
Vc=(39.8232.62)
Next Step Evaluate
Vc=5.06615776081425m/s
LAST Step Rounding Answer
Vc=5.0662m/s

Critical Velocity given Discharge through Control Section Formula Elements

Variables
Critical Velocity
The Critical velocity is the greatest velocity with which a fluid can flow through a given conduit without becoming turbulent.
Symbol: Vc
Measurement: SpeedUnit: m/s
Note: Value can be positive or negative.
Environmental Discharge
Environmental Discharge is the rate of flow of a liquid.
Symbol: Qe
Measurement: Volumetric Flow RateUnit: m³/s
Note: Value should be greater than 0.
Width of Throat
Width of Throat is the narrowest section of a conduit or channel, such as in a venturi meter or flume.
Symbol: Wt
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Critical Depth
Critical Depth occurs when the flow in a channel has a minimum specific energy. Specific energy refers to the sum of the depth of flow and the velocity head.
Symbol: dc
Measurement: LengthUnit: m
Note: Value should be greater than 0.

Other Formulas to find Critical Velocity

​Go Critical Velocity given Total Energy at Critical Point
Vc=2g(Ec-(dc+hf))
​Go Critical Velocity given Head Loss
Vc=(hf2g0.1)12
​Go Critical Velocity given Critical Depth in Control Section
Vc=dcg
​Go Critical Velocity given Depth of Section
Vc=dg1.55

How to Evaluate Critical Velocity given Discharge through Control Section?

Critical Velocity given Discharge through Control Section evaluator uses Critical Velocity = (Environmental Discharge/(Width of Throat*Critical Depth)) to evaluate the Critical Velocity, The Critical Velocity given Discharge through Control Section is defined as the speed at which a falling object reaches when both gravity and air resistance are equalized on the object, when we have a prior information of the value of discharge through the control section. Critical Velocity is denoted by Vc symbol.

How to evaluate Critical Velocity given Discharge through Control Section using this online evaluator? To use this online evaluator for Critical Velocity given Discharge through Control Section, enter Environmental Discharge (Qe), Width of Throat (Wt) & Critical Depth (dc) and hit the calculate button.

FAQs on Critical Velocity given Discharge through Control Section

What is the formula to find Critical Velocity given Discharge through Control Section?
The formula of Critical Velocity given Discharge through Control Section is expressed as Critical Velocity = (Environmental Discharge/(Width of Throat*Critical Depth)). Here is an example- 5.089059 = (39.82/(3*2.62)).
How to calculate Critical Velocity given Discharge through Control Section?
With Environmental Discharge (Qe), Width of Throat (Wt) & Critical Depth (dc) we can find Critical Velocity given Discharge through Control Section using the formula - Critical Velocity = (Environmental Discharge/(Width of Throat*Critical Depth)).
What are the other ways to Calculate Critical Velocity?
Here are the different ways to Calculate Critical Velocity-
  • Critical Velocity=sqrt(2*Acceleration due to Gravity*(Energy at Critical Point-(Critical Depth+Head Loss)))OpenImg
  • Critical Velocity=((Head Loss*2*Acceleration due to Gravity)/0.1)^(1/2)OpenImg
  • Critical Velocity=sqrt(Critical Depth*Acceleration due to Gravity)OpenImg
Can the Critical Velocity given Discharge through Control Section be negative?
Yes, the Critical Velocity given Discharge through Control Section, measured in Speed can be negative.
Which unit is used to measure Critical Velocity given Discharge through Control Section?
Critical Velocity given Discharge through Control Section 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 Critical Velocity given Discharge through Control Section can be measured.
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