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Water Flow Equation Formula

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The Water Flow refers to the movement of water through various natural or engineered systems. Check FAQs

Q w = A cs \cdot V f

Q_w - Water Flow?A_cs - Cross-Sectional Area?V_f - Flow Velocity?

Water Flow Equation Example

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With units

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Here is how the Water Flow Equation equation looks like with Values.

Here is how the Water Flow Equation equation looks like with Units.

Here is how the Water Flow Equation equation looks like.

14.56 = 13 \cdot 1.12

14.56m³/s = 13m² \cdot 1.12m/s

14.56 = 13 \cdot 1.12

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Water Flow Equation Solution

Follow our step by step solution on how to calculate Water Flow Equation?

FIRST Step Consider the formula

Q w = A cs \cdot V f

Next Step Substitute values of Variables

∴

Q w = 13m² \cdot 1.12m/s

Next Step Prepare to Evaluate

∴

Q w = 13 \cdot 1.12

LAST Step Evaluate

∴

Q w = 14.56m³/s

Water Flow Equation Formula Elements

Variables

Water Flow

The Water Flow refers to the movement of water through various natural or engineered systems.

Symbol: Q_w

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value can be positive or negative.

Formulas to find Water Flow

Cross-Sectional Area

The Cross-Sectional Area refers to the area of a two-dimensional shape that is obtained when a three-dimensional shape is sliced perpendicular to some specified axis at a point.

Symbol: A_cs

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Cross-Sectional Area

Flow Velocity

The Flow Velocity refers to the speed at which a fluid (such as water) moves through a specific cross-section.

Symbol: V_f

Measurement: SpeedUnit: m/s

Note: Value can be positive or negative.

Formulas to find Flow Velocity

Other formulas in Flow Velocity in Straight Sewers category

Go Flow Velocity using Manning's formula

V f = \frac{C \cdot {r H}^{\frac{2}{3}} \cdot S^{\frac{1}{2}}}{n c}

Go Roughness Coefficient using Flow Velocity

n c = \frac{C \cdot {r H}^{\frac{2}{3}} \cdot S^{\frac{1}{2}}}{V f}

Go Hydraulic Radius given Flow Velocity

r H = {(\frac{V f \cdot n c}{C \cdot S^{\frac{1}{2}}})}^{\frac{3}{2}}

Go Energy Loss given Flow Velocity

S = {(\frac{V f \cdot n c}{C \cdot {r H}^{\frac{2}{3}}})}^{2}

How to Evaluate Water Flow Equation?

Water Flow Equation evaluator uses Water Flow = Cross-Sectional Area*Flow Velocity to evaluate the Water Flow, The Water flow equation is defined as the product of the flow velocity and the cross sectional area of the pipe. Water Flow is denoted by Q_w symbol.

How to evaluate Water Flow Equation using this online evaluator? To use this online evaluator for Water Flow Equation, enter Cross-Sectional Area (A_cs) & Flow Velocity (V_f) and hit the calculate button.

FAQs on Water Flow Equation

What is the formula to find Water Flow Equation?

The formula of Water Flow Equation is expressed as Water Flow = Cross-Sectional Area*Flow Velocity. Here is an example- 14.56 = 13*1.12.

How to calculate Water Flow Equation?

With Cross-Sectional Area (A_cs) & Flow Velocity (V_f) we can find Water Flow Equation using the formula - Water Flow = Cross-Sectional Area*Flow Velocity.

Can the Water Flow Equation be negative?

Yes, the Water Flow Equation, measured in Volumetric Flow Rate can be negative.

Which unit is used to measure Water Flow Equation?

Water Flow Equation is usually measured using the Cubic Meter per Second[m³/s] for Volumetric Flow Rate. Cubic Meter per Day[m³/s], Cubic Meter per Hour[m³/s], Cubic Meter per Minute[m³/s] are the few other units in which Water Flow Equation can be measured.

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