Throat Area given Theoretical Discharge Formula

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The Cross Section Area 2 refers to the area of cross-section at the throat (venturi meter) of the structure. Check FAQs
Af=(AiQth)2(Ai22[g]hventuri)+Qth2
Af - Cross Section Area 2?Ai - Cross Section Area 1?Qth - Theoretical Discharge?hventuri - Venturi Head?[g] - Gravitational acceleration on Earth?

Throat Area given Theoretical Discharge Example

With values
With units
Only example

Here is how the Throat Area given Theoretical Discharge equation looks like with Values.

Here is how the Throat Area given Theoretical Discharge equation looks like with Units.

Here is how the Throat Area given Theoretical Discharge equation looks like.

1.8004Edit=(7.1Edit1.277Edit)2(7.1Edit229.806624Edit)+1.277Edit2
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Throat Area given Theoretical Discharge Solution

Follow our step by step solution on how to calculate Throat Area given Theoretical Discharge?

FIRST Step Consider the formula
Af=(AiQth)2(Ai22[g]hventuri)+Qth2
Next Step Substitute values of Variables
Af=(7.11.277m³/s)2(7.122[g]24mm)+1.277m³/s2
Next Step Substitute values of Constants
Af=(7.11.277m³/s)2(7.1229.8066m/s²24mm)+1.277m³/s2
Next Step Convert Units
Af=(7.11.277m³/s)2(7.1229.8066m/s²0.024m)+1.277m³/s2
Next Step Prepare to Evaluate
Af=(7.11.277)2(7.1229.80660.024)+1.2772
Next Step Evaluate
Af=1.80043450809868
LAST Step Rounding Answer
Af=1.8004

Throat Area given Theoretical Discharge Formula Elements

Variables
Constants
Functions
Cross Section Area 2
The Cross Section Area 2 refers to the area of cross-section at the throat (venturi meter) of the structure.
Symbol: Af
Measurement: AreaUnit:
Note: Value should be greater than 0.
Cross Section Area 1
The Cross Section Area 1 refers to the area of cross section at the inlet of the structure (venturi meter or pipe).
Symbol: Ai
Measurement: AreaUnit:
Note: Value should be greater than 0.
Theoretical Discharge
The Theoretical Discharge refers to the ideal flow rate of a fluid through a system, calculated under perfect conditions without considering any real-world losses like friction or turbulence.
Symbol: Qth
Measurement: Volumetric Flow RateUnit: m³/s
Note: Value should be greater than 0.
Venturi Head
The Venturi head refers to the difference between pressure head at inlet and pressure head at the throat.
Symbol: hventuri
Measurement: LengthUnit: mm
Note: Value can be positive or negative.
Gravitational acceleration on Earth
Gravitational acceleration on Earth means that the velocity of an object in free fall will increase by 9.8 m/s2 every second.
Symbol: [g]
Value: 9.80665 m/s²
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 in Venturi Meter category

​Go Theoretical Discharge through Pipe
Qth=AiAf(2[g]hventuri)(Ai)2-(Af)2
​Go Inlet Area given Theoretical Discharge
Ai=(QthAf)2(Qth)2-(Af22[g]hventuri)
​Go Venturi Head given Theoretical Discharge through Pipe
hventuri=((QthAiAf)((Ai)2-(Af)22[g]))2
​Go Coefficient of Discharge given Discharges
Cd=QactualVtheoritical

How to Evaluate Throat Area given Theoretical Discharge?

Throat Area given Theoretical Discharge evaluator uses Cross Section Area 2 = sqrt((Cross Section Area 1*Theoretical Discharge)^2/((Cross Section Area 1^2*2*[g]*Venturi Head)+Theoretical Discharge^2)) to evaluate the Cross Section Area 2, The Throat Area given Theoretical Discharge formula is defined as the area at a particular section of pipe. Cross Section Area 2 is denoted by Af symbol.

How to evaluate Throat Area given Theoretical Discharge using this online evaluator? To use this online evaluator for Throat Area given Theoretical Discharge, enter Cross Section Area 1 (Ai), Theoretical Discharge (Qth) & Venturi Head (hventuri) and hit the calculate button.

FAQs on Throat Area given Theoretical Discharge

What is the formula to find Throat Area given Theoretical Discharge?
The formula of Throat Area given Theoretical Discharge is expressed as Cross Section Area 2 = sqrt((Cross Section Area 1*Theoretical Discharge)^2/((Cross Section Area 1^2*2*[g]*Venturi Head)+Theoretical Discharge^2)). Here is an example- 1.800435 = sqrt((7.1*1.277)^2/((7.1^2*2*[g]*0.024)+1.277^2)).
How to calculate Throat Area given Theoretical Discharge?
With Cross Section Area 1 (Ai), Theoretical Discharge (Qth) & Venturi Head (hventuri) we can find Throat Area given Theoretical Discharge using the formula - Cross Section Area 2 = sqrt((Cross Section Area 1*Theoretical Discharge)^2/((Cross Section Area 1^2*2*[g]*Venturi Head)+Theoretical Discharge^2)). This formula also uses Gravitational acceleration on Earth constant(s) and Square Root (sqrt) function(s).
Can the Throat Area given Theoretical Discharge be negative?
No, the Throat Area given Theoretical Discharge, measured in Area cannot be negative.
Which unit is used to measure Throat Area given Theoretical Discharge?
Throat Area given Theoretical Discharge is usually measured using the Square Meter[m²] for Area. Square Kilometer[m²], Square Centimeter[m²], Square Millimeter[m²] are the few other units in which Throat Area given Theoretical Discharge can be measured.
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