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Characteristic length is the linear dimension expressed in physical model relationships between prototype and model. Check FAQs
L=FiμviscosityFvρfluidVf
L - Characteristic length?Fi - Inertia Forces?μviscosity - Dynamic Viscosity?Fv - Viscous Force?ρfluid - Density of Fluid?Vf - Velocity of Fluid?

Length for Ratio of Inertial Forces and Viscous Forces Example

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With units
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Here is how the Length for Ratio of Inertial Forces and Viscous Forces equation looks like with Values.

Here is how the Length for Ratio of Inertial Forces and Viscous Forces equation looks like with Units.

Here is how the Length for Ratio of Inertial Forces and Viscous Forces equation looks like.

3.0035Edit=3.636Edit10.2Edit0.0504Edit1.225Edit20Edit
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Length for Ratio of Inertial Forces and Viscous Forces Solution

Follow our step by step solution on how to calculate Length for Ratio of Inertial Forces and Viscous Forces?

FIRST Step Consider the formula
L=FiμviscosityFvρfluidVf
Next Step Substitute values of Variables
L=3.636kN10.2P0.0504kN1.225kg/m³20m/s
Next Step Convert Units
L=3636N1.02Pa*s50.4N1.225kg/m³20m/s
Next Step Prepare to Evaluate
L=36361.0250.41.22520
Next Step Evaluate
L=3.00349854227405m
LAST Step Rounding Answer
L=3.0035m

Length for Ratio of Inertial Forces and Viscous Forces Formula Elements

Variables
Characteristic length
Characteristic length is the linear dimension expressed in physical model relationships between prototype and model.
Symbol: L
Measurement: LengthUnit: m
Note: Value can be positive or negative.
Inertia Forces
Inertia Forces are the forces that keep fluid moving against viscous [ viscosity] forces.
Symbol: Fi
Measurement: ForceUnit: kN
Note: Value should be greater than 0.
Dynamic Viscosity
The Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied.
Symbol: μviscosity
Measurement: Dynamic ViscosityUnit: P
Note: Value should be greater than 0.
Viscous Force
Viscous Force is force due to viscosity.
Symbol: Fv
Measurement: ForceUnit: kN
Note: Value can be positive or negative.
Density of Fluid
Density of Fluid is defined as the mass of fluid per unit volume of the said fluid.
Symbol: ρfluid
Measurement: DensityUnit: kg/m³
Note: Value should be greater than 0.
Velocity of Fluid
Velocity of Fluid is the vector field that is used to describe fluid motion in a mathematical manner.
Symbol: Vf
Measurement: SpeedUnit: m/s
Note: Value can be positive or negative.

Other Formulas to find Characteristic length

​Go Length given Kinematic Viscosity, Ratio of Inertial forces and Viscous forces
L=FiνFvVf

Other formulas in Relation between Forces on the Prototype and Forces on the Model category

​Go Force on Prototype
Fp=αFFm
​Go Scale Factor for Inertia Forces given Force on Prototype
αF=FpFm
​Go Force on Model given Force on Prototype
Fm=FpαF
​Go Relation between Forces on Prototype and Forces on Model
Fp=αρ(αV2)(αL2)Fm

How to Evaluate Length for Ratio of Inertial Forces and Viscous Forces?

Length for Ratio of Inertial Forces and Viscous Forces evaluator uses Characteristic length = (Inertia Forces*Dynamic Viscosity)/(Viscous Force*Density of Fluid*Velocity of Fluid) to evaluate the Characteristic length, The Length for Ratio of Inertial Forces and Viscous Forces can be expressed using Newton’s friction model while while the inertia forces (from above) are proportional to the respective parameters. Characteristic length is denoted by L symbol.

How to evaluate Length for Ratio of Inertial Forces and Viscous Forces using this online evaluator? To use this online evaluator for Length for Ratio of Inertial Forces and Viscous Forces, enter Inertia Forces (Fi), Dynamic Viscosity viscosity), Viscous Force (Fv), Density of Fluid fluid) & Velocity of Fluid (Vf) and hit the calculate button.

FAQs on Length for Ratio of Inertial Forces and Viscous Forces

What is the formula to find Length for Ratio of Inertial Forces and Viscous Forces?
The formula of Length for Ratio of Inertial Forces and Viscous Forces is expressed as Characteristic length = (Inertia Forces*Dynamic Viscosity)/(Viscous Force*Density of Fluid*Velocity of Fluid). Here is an example- 3.003499 = (3636*1.02)/(50.4*1.225*20).
How to calculate Length for Ratio of Inertial Forces and Viscous Forces?
With Inertia Forces (Fi), Dynamic Viscosity viscosity), Viscous Force (Fv), Density of Fluid fluid) & Velocity of Fluid (Vf) we can find Length for Ratio of Inertial Forces and Viscous Forces using the formula - Characteristic length = (Inertia Forces*Dynamic Viscosity)/(Viscous Force*Density of Fluid*Velocity of Fluid).
What are the other ways to Calculate Characteristic length?
Here are the different ways to Calculate Characteristic length-
  • Characteristic length=(Inertia Forces*Kinematic Viscosity for Model Analysis)/(Viscous Force*Velocity of Fluid)OpenImg
Can the Length for Ratio of Inertial Forces and Viscous Forces be negative?
Yes, the Length for Ratio of Inertial Forces and Viscous Forces, measured in Length can be negative.
Which unit is used to measure Length for Ratio of Inertial Forces and Viscous Forces?
Length for Ratio of Inertial Forces and Viscous Forces is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Length for Ratio of Inertial Forces and Viscous Forces can be measured.
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