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Area at Section 2 or at Vena Contracta 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

A f = C c \cdot a o

A_f - Cross Section Area 2?C_c - Coefficient of Contraction?a_o - Area of Orifice?

Area at Section 2 or at Vena Contracta Example

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Here is how the Area at Section 2 or at Vena Contracta equation looks like with Values.

Here is how the Area at Section 2 or at Vena Contracta equation looks like with Units.

Here is how the Area at Section 2 or at Vena Contracta equation looks like.

2.6884 = 0.611 \cdot 4.4

2.6884m² = 0.611 \cdot 4.4m²

2.6884 = 0.611 \cdot 4.4

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Area at Section 2 or at Vena Contracta Solution

Follow our step by step solution on how to calculate Area at Section 2 or at Vena Contracta?

FIRST Step Consider the formula

A f = C c \cdot a o

Next Step Substitute values of Variables

∴

A f = 0.611 \cdot 4.4m²

Next Step Prepare to Evaluate

∴

A f = 0.611 \cdot 4.4

LAST Step Evaluate

∴

A f = 2.6884m²

Area at Section 2 or at Vena Contracta Formula Elements

Variables

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: A_f

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Cross Section Area 2

Coefficient of Contraction

The Coefficient of Contraction refers to the ratio between the area of the jet at the vena contract and the area of the orifice.

Symbol: C_c

Measurement: NAUnit: Unitless

Note: Value should be between 0 to 1.

Formulas to find Coefficient of Contraction

Area of Orifice

The Area of Orifice refers to the any opening, mouth, hole or vent, as in a pipe, a plate, or a body.

Symbol: a_o

Measurement: AreaUnit: m²

Note: Value can be positive or negative.

Formulas to find Area of Orifice

Other formulas in Orifice Meter category

Go Theoretical Velocity at Section 2 in Orifice Meter

V p2 = \sqrt{2 \cdot [g] \cdot h venturi + {V 1}^{2}}

Go Theoretical Velocity at Section 1 in Orifice Meter

V 1 = \sqrt{({V p2}^{2}) - (2 \cdot [g] \cdot h venturi)}

Go Actual Velocity given Theoretical Velocity at Section 2

v = C v \cdot V p2

Go Area of Orifice given Area at Section 2 or at Vena Contracta

a o = \frac{A f}{C c}

How to Evaluate Area at Section 2 or at Vena Contracta?

Area at Section 2 or at Vena Contracta evaluator uses Cross Section Area 2 = Coefficient of Contraction*Area of Orifice to evaluate the Cross Section Area 2, The Area at Section 2 or at Vena Contracta formula is defined as minimum area of flow in the section of lower energy. Cross Section Area 2 is denoted by A_f symbol.

How to evaluate Area at Section 2 or at Vena Contracta using this online evaluator? To use this online evaluator for Area at Section 2 or at Vena Contracta, enter Coefficient of Contraction (C_c) & Area of Orifice (a_o) and hit the calculate button.

FAQs on Area at Section 2 or at Vena Contracta

What is the formula to find Area at Section 2 or at Vena Contracta?

The formula of Area at Section 2 or at Vena Contracta is expressed as Cross Section Area 2 = Coefficient of Contraction*Area of Orifice. Here is an example- 2.6884 = 0.611*4.4.

How to calculate Area at Section 2 or at Vena Contracta?

With Coefficient of Contraction (C_c) & Area of Orifice (a_o) we can find Area at Section 2 or at Vena Contracta using the formula - Cross Section Area 2 = Coefficient of Contraction*Area of Orifice.

Can the Area at Section 2 or at Vena Contracta be negative?

No, the Area at Section 2 or at Vena Contracta, measured in Area cannot be negative.

Which unit is used to measure Area at Section 2 or at Vena Contracta?

Area at Section 2 or at Vena Contracta 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 Area at Section 2 or at Vena Contracta can be measured.

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