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Pressure Head Drop Formula

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The Head Loss due to Friction occurs due to the effect of the fluid's viscosity near the surface of the pipe or duct. Check FAQs

h location = \frac{12 \cdot μ \cdot L p \cdot V mean}{γ f}

h_location - Head Loss due to Friction?μ - Dynamic Viscosity?L_p - Length of Pipe?V_mean - Mean Velocity?γ_f - Specific Weight of Liquid?

Pressure Head Drop Example

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Here is how the Pressure Head Drop equation looks like with Values.

Here is how the Pressure Head Drop equation looks like with Units.

Here is how the Pressure Head Drop equation looks like.

4.0426 = \frac{12 \cdot 10.2 \cdot 0.1 \cdot 32.4}{9.81}

4.0426m = \frac{12 \cdot 10.2P \cdot 0.1m \cdot 32.4m/s}{9.81kN/m³}

4.0426 = \frac{12 \cdot 10.2 \cdot 0.1 \cdot 32.4}{9.81}

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Pressure Head Drop Solution

Follow our step by step solution on how to calculate Pressure Head Drop?

FIRST Step Consider the formula

h location = \frac{12 \cdot μ \cdot L p \cdot V mean}{γ f}

Next Step Substitute values of Variables

∴

h location = \frac{12 \cdot 10.2P \cdot 0.1m \cdot 32.4m/s}{9.81kN/m³}

Next Step Convert Units

∴

h location = \frac{12 \cdot 1.02Pa*s \cdot 0.1m \cdot 32.4m/s}{9.81kN/m³}

Next Step Prepare to Evaluate

∴

h location = \frac{12 \cdot 1.02 \cdot 0.1 \cdot 32.4}{9.81}

Next Step Evaluate

∴

h location = 4.04256880733945m

LAST Step Rounding Answer

∴

h location = 4.0426m

Pressure Head Drop Formula Elements

Variables

Head Loss due to Friction

The Head Loss due to Friction occurs due to the effect of the fluid's viscosity near the surface of the pipe or duct.

Symbol: h_location

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Head Loss due to Friction

Dynamic Viscosity

The Dynamic Viscosity refers to the internal resistance of a fluid to flow when a force is applied.

Symbol: μ

Measurement: Dynamic ViscosityUnit: P

Note: Value should be greater than 0.

Formulas to find Dynamic Viscosity

Length of Pipe

The Length of Pipe refers to total length from one end to another in which the liquid is flowing.

Symbol: L_p

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Length of Pipe

Mean Velocity

Mean velocity is defined as the average velocity of a fluid at a point and over an arbitrary time T.

Symbol: V_mean

Measurement: SpeedUnit: m/s

Note: Value can be positive or negative.

Formulas to find Mean Velocity

Specific Weight of Liquid

The Specific Weight of Liquid refers to the weight per unit volume of that substance.

Symbol: γ_f

Measurement: Specific WeightUnit: kN/m³

Note: Value should be greater than 0.

Formulas to find Specific Weight of Liquid

Other formulas in Laminar Flow between Parallel Plates, both Plates at Rest category

Go Velocity Distribution Profile

v = - (\frac{1}{2 \cdot μ}) \cdot dp|dr \cdot (w \cdot R - (R^{2}))

Go Distance between Plates using Velocity Distribution Profile

w = \frac{(\frac{- v \cdot 2 \cdot μ}{dp|dr}) + (R^{2})}{R}

Go Maximum Velocity between Plates

V max = \frac{(w^{2}) \cdot dp|dr}{8 \cdot μ}

Go Distance between Plates given Maximum Velocity between Plates

w = \sqrt{\frac{8 \cdot μ \cdot V max}{dp|dr}}

How to Evaluate Pressure Head Drop?

Pressure Head Drop evaluator uses Head Loss due to Friction = (12*Dynamic Viscosity*Length of Pipe*Mean Velocity)/(Specific Weight of Liquid) to evaluate the Head Loss due to Friction, The Pressure Head Drop is defined as the loss of energy due to friction acting on the boundary of pipe and non viscous flow. Head Loss due to Friction is denoted by h_location symbol.

How to evaluate Pressure Head Drop using this online evaluator? To use this online evaluator for Pressure Head Drop, enter Dynamic Viscosity (μ), Length of Pipe (L_p), Mean Velocity (V_mean) & Specific Weight of Liquid (γ_f) and hit the calculate button.

FAQs on Pressure Head Drop

What is the formula to find Pressure Head Drop?

The formula of Pressure Head Drop is expressed as Head Loss due to Friction = (12*Dynamic Viscosity*Length of Pipe*Mean Velocity)/(Specific Weight of Liquid). Here is an example- 4.042569 = (12*1.02*0.1*32.4)/(9810).

How to calculate Pressure Head Drop?

With Dynamic Viscosity (μ), Length of Pipe (L_p), Mean Velocity (V_mean) & Specific Weight of Liquid (γ_f) we can find Pressure Head Drop using the formula - Head Loss due to Friction = (12*Dynamic Viscosity*Length of Pipe*Mean Velocity)/(Specific Weight of Liquid).

Can the Pressure Head Drop be negative?

No, the Pressure Head Drop, measured in Length cannot be negative.

Which unit is used to measure Pressure Head Drop?

Pressure Head Drop is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Pressure Head Drop can be measured.

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Pressure Head Drop Formula

Pressure Head Drop Example

Pressure Head Drop Solution

Pressure Head Drop Formula Elements

Other formulas in Laminar Flow between Parallel Plates, both Plates at Rest category

How to Evaluate Pressure Head Drop?

FAQs on Pressure Head Drop

Variable Name