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Surface Viscosity Formula

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Surface Viscosity is defined as the frictional force resulting due to the interaction between the surface and inner layer of the molecule. Check FAQs

η s = \frac{μ viscosity}{d}

η_s - Surface Viscosity?μ_viscosity - Dynamic Viscosity?d - Thickness of Surface Phase?

Surface Viscosity Example

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With units

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Here is how the Surface Viscosity equation looks like with Values.

Here is how the Surface Viscosity equation looks like with Units.

Here is how the Surface Viscosity equation looks like.

0.0496 = \frac{10.2}{20.55}

0.0496kg/s = \frac{10.2P}{20.55m}

0.0496 = \frac{10.2}{20.55}

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Surface Viscosity Solution

Follow our step by step solution on how to calculate Surface Viscosity?

FIRST Step Consider the formula

η s = \frac{μ viscosity}{d}

Next Step Substitute values of Variables

∴

η s = \frac{10.2P}{20.55m}

Next Step Convert Units

∴

η s = \frac{1.02Pa*s}{20.55m}

Next Step Prepare to Evaluate

∴

η s = \frac{1.02}{20.55}

Next Step Evaluate

∴

η s = 0.0496350364963504kg/s

LAST Step Rounding Answer

∴

η s = 0.0496kg/s

Surface Viscosity Formula Elements

Variables

Surface Viscosity

Surface Viscosity is defined as the frictional force resulting due to the interaction between the surface and inner layer of the molecule.

Symbol: η_s

Measurement: Mass Flow RateUnit: kg/s

Note: Value should be greater than 0.

Formulas to find Surface Viscosity

Dynamic Viscosity

The Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied.

Symbol: μ_viscosity

Measurement: Dynamic ViscosityUnit: P

Note: Value should be greater than 0.

Formulas to find Dynamic Viscosity

Thickness of Surface Phase

The Thickness of Surface Phase is equal to the range of intermolecular forces of that phase.

Symbol: d

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Thickness of Surface Phase

Other formulas in Specific Surface Area category

Go Critical Packing Parameter

CPP = \frac{v}{a o \cdot l}

Go Number of Moles of Surfactant given Critical Micelle Concentration

[M] = \frac{c - c CMC}{n}

Go Micellar Aggregation Number

N mic = \frac{(\frac{4}{3}) \cdot π \cdot ({R mic}^{3})}{V hydrophobic}

Go Micellar Core Radius given Micellar Aggregation Number

R mic = {(\frac{N mic \cdot 3 \cdot V hydrophobic}{4 \cdot π})}^{\frac{1}{3}}

How to Evaluate Surface Viscosity?

Surface Viscosity evaluator uses Surface Viscosity = Dynamic Viscosity/Thickness of Surface Phase to evaluate the Surface Viscosity, The Surface Viscosity formula is defined as the ratio of the viscosity of bulk to the thickness of the surface phase of the monolayer. Surface Viscosity is denoted by η_s symbol.

How to evaluate Surface Viscosity using this online evaluator? To use this online evaluator for Surface Viscosity, enter Dynamic Viscosity (μ_viscosity) & Thickness of Surface Phase (d) and hit the calculate button.

FAQs on Surface Viscosity

What is the formula to find Surface Viscosity?

The formula of Surface Viscosity is expressed as Surface Viscosity = Dynamic Viscosity/Thickness of Surface Phase. Here is an example- 0.049635 = 1.02/20.55.

How to calculate Surface Viscosity?

With Dynamic Viscosity (μ_viscosity) & Thickness of Surface Phase (d) we can find Surface Viscosity using the formula - Surface Viscosity = Dynamic Viscosity/Thickness of Surface Phase.

Can the Surface Viscosity be negative?

No, the Surface Viscosity, measured in Mass Flow Rate cannot be negative.

Which unit is used to measure Surface Viscosity?

Surface Viscosity is usually measured using the Kilogram per Second[kg/s] for Mass Flow Rate. Gram per Second[kg/s], Gram per Hour[kg/s], Milligram per Minute[kg/s] are the few other units in which Surface Viscosity can be measured.

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Surface Viscosity Formula

Surface Viscosity Example

Surface Viscosity Solution

Surface Viscosity Formula Elements

Other formulas in Specific Surface Area category

How to Evaluate Surface Viscosity?

FAQs on Surface Viscosity

Variable Name