FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Flow Velocity using Manning's formula Formula

GoVelocity using Water Flow Equation Formula

Fx Copy

LaTeX Copy

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

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

V_f - Flow Velocity?C - Conversion Factor?r_H - Hydraulic Radius?S - Energy Loss?n_c - Roughness Coefficient of Conduit Surface?

Flow Velocity using Manning's formula Example

With values

With units

Only example

Here is how the Flow Velocity using Manning's formula equation looks like with Values.

Here is how the Flow Velocity using Manning's formula equation looks like with Units.

Here is how the Flow Velocity using Manning's formula equation looks like.

1.1123 = \frac{0.028 \cdot {0.33}^{\frac{2}{3}} \cdot 2^{\frac{1}{2}}}{0.017}

1.1123m/s = \frac{0.028 \cdot {0.33m}^{\frac{2}{3}} \cdot {2J}^{\frac{1}{2}}}{0.017}

1.1123 = \frac{0.028 \cdot {0.33}^{\frac{2}{3}} \cdot 2^{\frac{1}{2}}}{0.017}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Civil » Category

Environmental Engineering » fx Flow Velocity using Manning's formula

Flow Velocity using Manning's formula Solution

Follow our step by step solution on how to calculate Flow Velocity using Manning's formula?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

V f = \frac{0.028 \cdot {0.33m}^{\frac{2}{3}} \cdot {2J}^{\frac{1}{2}}}{0.017}

Next Step Prepare to Evaluate

∴

V f = \frac{0.028 \cdot {0.33}^{\frac{2}{3}} \cdot 2^{\frac{1}{2}}}{0.017}

Next Step Evaluate

∴

V f = 1.11232936114258m/s

LAST Step Rounding Answer

∴

V f = 1.1123m/s

Flow Velocity using Manning's formula Formula Elements

Variables

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

Conversion Factor

Conversion Factor is a numerical coefficient used to convert one set of units to another.

Symbol: C

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Conversion Factor

Hydraulic Radius

The Hydraulic Radius refers to the ratio of the cross-sectional area of a channel or pipe in which a fluid is flowing to the wet perimeter of the conduit.

Symbol: r_H

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Hydraulic Radius

Energy Loss

The Energy Loss refers to the dissipation or reduction of energy within a system or process.

Symbol: S

Measurement: EnergyUnit: J

Note: Value can be positive or negative.

Formulas to find Energy Loss

Roughness Coefficient of Conduit Surface

The Roughness Coefficient of Conduit Surface refers to the roughness or irregularity of the inner surface of a conduit through which fluid flows.

Symbol: n_c

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Roughness Coefficient of Conduit Surface

Other Formulas to find Flow Velocity

Go Velocity using Water Flow Equation

V f = \frac{Q w}{A cs}

Other formulas in Flow Velocity in Straight Sewers category

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}

Go Conversion Factor given Flow Velocity

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

How to Evaluate Flow Velocity using Manning's formula?

Flow Velocity using Manning's formula evaluator uses Flow Velocity = (Conversion Factor*Hydraulic Radius^(2/3)*Energy Loss^(1/2))/Roughness Coefficient of Conduit Surface to evaluate the Flow Velocity, The Flow velocity using Manning's formula is defined as the rate of flow of water when we have a prior info of the roughness coefficient of the pipe material used, energy loss due to it and hydraulic radius. Flow Velocity is denoted by V_f symbol.

How to evaluate Flow Velocity using Manning's formula using this online evaluator? To use this online evaluator for Flow Velocity using Manning's formula, enter Conversion Factor (C), Hydraulic Radius (r_H), Energy Loss (S) & Roughness Coefficient of Conduit Surface (n_c) and hit the calculate button.

FAQs on Flow Velocity using Manning's formula

What is the formula to find Flow Velocity using Manning's formula?

The formula of Flow Velocity using Manning's formula is expressed as Flow Velocity = (Conversion Factor*Hydraulic Radius^(2/3)*Energy Loss^(1/2))/Roughness Coefficient of Conduit Surface. Here is an example- 59.03291 = (0.028*0.33^(2/3)*2^(1/2))/0.017.

How to calculate Flow Velocity using Manning's formula?

With Conversion Factor (C), Hydraulic Radius (r_H), Energy Loss (S) & Roughness Coefficient of Conduit Surface (n_c) we can find Flow Velocity using Manning's formula using the formula - Flow Velocity = (Conversion Factor*Hydraulic Radius^(2/3)*Energy Loss^(1/2))/Roughness Coefficient of Conduit Surface.

What are the other ways to Calculate Flow Velocity?

Here are the different ways to Calculate Flow Velocity-

Flow Velocity=Water Flow/Cross-Sectional Area

Can the Flow Velocity using Manning's formula be negative?

Yes, the Flow Velocity using Manning's formula, measured in Speed can be negative.

Which unit is used to measure Flow Velocity using Manning's formula?

Flow Velocity using Manning's formula 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 Flow Velocity using Manning's formula can be measured.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Flow Velocity using Manning's formula Formula

​GoVelocity using Water Flow Equation Formula

Flow Velocity using Manning's formula Example

Flow Velocity using Manning's formula Solution

Flow Velocity using Manning's formula Formula Elements

Other Formulas to find Flow Velocity

Other formulas in Flow Velocity in Straight Sewers category

How to Evaluate Flow Velocity using Manning's formula?

FAQs on Flow Velocity using Manning's formula

Variable Name

GoVelocity using Water Flow Equation Formula