Discharge through Drowned Portion given Total Discharge over Submerged Weir Solution

STEP 0: Pre-Calculation Summary
Formula Used
Discharge through Drowned Portion = Total Discharge of Submerged Weir-Discharge through Free Portion
Q2 = QT-Q1
This formula uses 3 Variables
Variables Used
Discharge through Drowned Portion - (Measured in Cubic Meter per Second) - Discharge through Drowned Portion is a measure of the quantity of fluid flow over unit time, representing the quantity of water in between the downstream and the crest of the water.
Total Discharge of Submerged Weir - (Measured in Cubic Meter per Second) - Total Discharge of Submerged Weir is sum of the discharge from free and drowned portion.
Discharge through Free Portion - (Measured in Cubic Meter per Second) - Discharge through Free Portion is a measure of the quantity of fluid flow over unit time, representing the quantity in between the upstream and downstream portion.
STEP 1: Convert Input(s) to Base Unit
Total Discharge of Submerged Weir: 174.7 Cubic Meter per Second --> 174.7 Cubic Meter per Second No Conversion Required
Discharge through Free Portion: 50.1 Cubic Meter per Second --> 50.1 Cubic Meter per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Q2 = QT-Q1 --> 174.7-50.1
Evaluating ... ...
Q2 = 124.6
STEP 3: Convert Result to Output's Unit
124.6 Cubic Meter per Second --> No Conversion Required
FINAL ANSWER
124.6 Cubic Meter per Second <-- Discharge through Drowned Portion
(Calculation completed in 00.020 seconds)

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National Institute of Technology (NIT), Warangal
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17 Submerged Weirs Calculators

Coefficient of Discharge if Velocity is Approached given Discharge through Free Weir
Go Coefficient of Discharge = (3*Discharge through Free Portion)/(2*Length of Weir Crest*sqrt(2*Acceleration due to Gravity)*(((Head on Upstream of Weir-Head on Downstream of Weir)+(Velocity over Submerged Weir^2/(2*Acceleration due to Gravity)))^(3/2)-(Velocity over Submerged Weir^2/(2*Acceleration due to Gravity))^(3/2)))
Length of Crest for Discharge through Free Weir
Go Length of Weir Crest = (3*Discharge through Free Portion)/(2*Coefficient of Discharge*sqrt(2*Acceleration due to Gravity)*(((Head on Upstream of Weir-Head on Downstream of Weir)+(Velocity over Submerged Weir^2/(2*Acceleration due to Gravity)))^(3/2)-(Velocity over Submerged Weir^2/(2*Acceleration due to Gravity))^(3/2)))
Discharge through Free Weir if Velocity is Approached
Go Discharge through Free Portion = (2/3)*Coefficient of Discharge*Length of Weir Crest*sqrt(2*Acceleration due to Gravity)*(((Head on Upstream of Weir-Head on Downstream of Weir)+(Velocity over Submerged Weir^2/(2*Acceleration due to Gravity)))^(3/2)-(Velocity over Submerged Weir^2/(2*Acceleration due to Gravity))^(3/2))
Coefficient of Discharge if Velocity is Approached for Submerged Weir
Go Coefficient of Discharge = Discharge through Drowned Portion/(Length of Weir Crest*Head on Downstream of Weir*(sqrt(2*Acceleration due to Gravity*(Head on Upstream of Weir-Head on Downstream of Weir)+Velocity over Submerged Weir^2)))
Length of Crest for Discharge through Drowned Portion
Go Length of Weir Crest = Discharge through Drowned Portion/(Coefficient of Discharge*Head on Downstream of Weir*(sqrt(2*Acceleration due to Gravity*(Head on Upstream of Weir-Head on Downstream of Weir)+Velocity over Submerged Weir^2)))
Discharge through Submerged Weir if Velocity is Approached
Go Discharge through Drowned Portion = Coefficient of Discharge*Length of Weir Crest*Head on Downstream of Weir*(sqrt(2*Acceleration due to Gravity*(Head on Upstream of Weir-Head on Downstream of Weir)+Velocity over Submerged Weir^2))
Coefficient of Discharge given Discharge through Drowned Portion
Go Coefficient of Discharge = Discharge through Drowned Portion/((Length of Weir Crest*Head on Downstream of Weir)*sqrt(2*Acceleration due to Gravity*(Head on Upstream of Weir-Head on Downstream of Weir)))
Discharge through Drowned Portion
Go Discharge through Drowned Portion = Coefficient of Discharge*(Length of Weir Crest*Head on Downstream of Weir)*sqrt(2*Acceleration due to Gravity*(Head on Upstream of Weir-Head on Downstream of Weir))
Head on Upstream Weir for Discharge through Drowned Portion
Go Head on Upstream of Weir = (Discharge through Drowned Portion/(Coefficient of Discharge*Length of Weir Crest*Head on Downstream of Weir))^2*(1/(2*Acceleration due to Gravity))+Head on Downstream of Weir
Head on Downstream Weir for Discharge through Free Weir Portion
Go Head on Downstream of Weir = -((3*Discharge through Free Portion)/(2*Coefficient of Discharge*Length of Weir Crest* sqrt(2*Acceleration due to Gravity)))^(2/3)+Head on Upstream of Weir
Coefficient of Discharge given Discharge through Free Weir Portion
Go Coefficient of Discharge = (3*Discharge through Free Portion)/(2*Length of Weir Crest*sqrt(2*Acceleration due to Gravity)*(Head on Upstream of Weir-Head on Downstream of Weir)^(3/2))
Head on Upstream Weir given Discharge through Free Weir Portion
Go Head on Upstream of Weir = ((3*Discharge through Free Portion)/(2*Coefficient of Discharge*Length of Weir Crest*sqrt(2*Acceleration due to Gravity)))^(2/3)+Head on Downstream of Weir
Length of Crest for Discharge through Free Weir Portion
Go Length of Weir Crest = (3*Discharge through Free Portion)/(2*Coefficient of Discharge*sqrt(2*Acceleration due to Gravity)*(Head on Upstream of Weir-Head on Downstream of Weir)^(3/2))
Discharge through Free Weir Portion
Go Discharge through Free Portion = (2/3)*Coefficient of Discharge*Length of Weir Crest*sqrt(2*Acceleration due to Gravity)*(Head on Upstream of Weir-Head on Downstream of Weir)^(3/2)
Discharge through Free Weir Portion given Total Discharge over Submerged Weir
Go Discharge through Free Portion = Total Discharge of Submerged Weir-Discharge through Drowned Portion
Discharge through Drowned Portion given Total Discharge over Submerged Weir
Go Discharge through Drowned Portion = Total Discharge of Submerged Weir-Discharge through Free Portion
Total Discharge over Submerged Weir
Go Total Discharge of Submerged Weir = Discharge through Free Portion+Discharge through Drowned Portion

Discharge through Drowned Portion given Total Discharge over Submerged Weir Formula

Discharge through Drowned Portion = Total Discharge of Submerged Weir-Discharge through Free Portion
Q2 = QT-Q1

What is Total Discharge?

The Total Discharge(Q) over a Submerged Weir is a measure of the quantity of any fluid flow over unit time. The quantity may be either volume or mass.

How to Calculate Discharge through Drowned Portion given Total Discharge over Submerged Weir?

Discharge through Drowned Portion given Total Discharge over Submerged Weir calculator uses Discharge through Drowned Portion = Total Discharge of Submerged Weir-Discharge through Free Portion to calculate the Discharge through Drowned Portion, Discharge through drowned portion given total discharge over submerged weir is flow through drowned portions of submerged weir. Discharge through Drowned Portion is denoted by Q2 symbol.

How to calculate Discharge through Drowned Portion given Total Discharge over Submerged Weir using this online calculator? To use this online calculator for Discharge through Drowned Portion given Total Discharge over Submerged Weir, enter Total Discharge of Submerged Weir (QT) & Discharge through Free Portion (Q1) and hit the calculate button. Here is how the Discharge through Drowned Portion given Total Discharge over Submerged Weir calculation can be explained with given input values -> 124.6 = 174.7-50.1.

FAQ

What is Discharge through Drowned Portion given Total Discharge over Submerged Weir?
Discharge through drowned portion given total discharge over submerged weir is flow through drowned portions of submerged weir and is represented as Q2 = QT-Q1 or Discharge through Drowned Portion = Total Discharge of Submerged Weir-Discharge through Free Portion. Total Discharge of Submerged Weir is sum of the discharge from free and drowned portion & Discharge through Free Portion is a measure of the quantity of fluid flow over unit time, representing the quantity in between the upstream and downstream portion.
How to calculate Discharge through Drowned Portion given Total Discharge over Submerged Weir?
Discharge through drowned portion given total discharge over submerged weir is flow through drowned portions of submerged weir is calculated using Discharge through Drowned Portion = Total Discharge of Submerged Weir-Discharge through Free Portion. To calculate Discharge through Drowned Portion given Total Discharge over Submerged Weir, you need Total Discharge of Submerged Weir (QT) & Discharge through Free Portion (Q1). With our tool, you need to enter the respective value for Total Discharge of Submerged Weir & Discharge through Free Portion 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 Discharge through Drowned Portion?
In this formula, Discharge through Drowned Portion uses Total Discharge of Submerged Weir & Discharge through Free Portion. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Discharge through Drowned Portion = Coefficient of Discharge*(Length of Weir Crest*Head on Downstream of Weir)*sqrt(2*Acceleration due to Gravity*(Head on Upstream of Weir-Head on Downstream of Weir))
  • Discharge through Drowned Portion = Coefficient of Discharge*Length of Weir Crest*Head on Downstream of Weir*(sqrt(2*Acceleration due to Gravity*(Head on Upstream of Weir-Head on Downstream of Weir)+Velocity over Submerged Weir^2))
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