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The Nusselt Number is a dimensionless quantity that represents the ratio of convective to conductive heat transfer in fluid flow, indicating the efficiency of heat transfer. Check FAQs
Nu=(0.027Re0.8)Pr13(μavgμwall)0.14
Nu - Nusselt Number?Re - Reynolds Number?Pr - Prandtl Number?μavg - Average Viscosity of Fluid?μwall - Wall Viscosity?

Nusselt Number given viscosity of fluid Example

With values
With units
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Here is how the Nusselt Number given viscosity of fluid equation looks like with Values.

Here is how the Nusselt Number given viscosity of fluid equation looks like with Units.

Here is how the Nusselt Number given viscosity of fluid equation looks like.

10.9701Edit=(0.0275000Edit0.8)0.7Edit13(0.0007Edit0.1Edit)0.14
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Nusselt Number given viscosity of fluid Solution

Follow our step by step solution on how to calculate Nusselt Number given viscosity of fluid?

FIRST Step Consider the formula
Nu=(0.027Re0.8)Pr13(μavgμwall)0.14
Next Step Substitute values of Variables
Nu=(0.02750000.8)0.713(0.0007Pa*s0.1Pa*s)0.14
Next Step Prepare to Evaluate
Nu=(0.02750000.8)0.713(0.00070.1)0.14
Next Step Evaluate
Nu=10.9701059035851
LAST Step Rounding Answer
Nu=10.9701

Nusselt Number given viscosity of fluid Formula Elements

Variables
Nusselt Number
The Nusselt Number is a dimensionless quantity that represents the ratio of convective to conductive heat transfer in fluid flow, indicating the efficiency of heat transfer.
Symbol: Nu
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Reynolds Number
The Reynolds Number is a dimensionless quantity that helps predict flow patterns in different fluid flow situations, particularly in determining whether the flow is laminar or turbulent.
Symbol: Re
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Prandtl Number
The Prandtl Number is a dimensionless quantity that relates the rate of momentum diffusion to the rate of thermal diffusion in fluid flow, indicating the relative importance of these processes.
Symbol: Pr
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Average Viscosity of Fluid
The Average Viscosity of Fluid is a measure of a fluid's resistance to flow under turbulent conditions, influencing the behavior of fluid movement in pipes and channels.
Symbol: μavg
Measurement: Dynamic ViscosityUnit: Pa*s
Note: Value should be greater than 0.
Wall Viscosity
The Wall Viscosity is the measure of a fluid's resistance to flow along the surface of a wall in turbulent flow conditions.
Symbol: μwall
Measurement: Dynamic ViscosityUnit: Pa*s
Note: Value should be greater than 0.

Other Formulas to find Nusselt Number

​Go Nusselt number at entrance region
Nu=0.036(ReD0.8)(Pr0.33)(DL)0.055
​Go Nusselt number for Smooth tubes
Nu=0.027ReD0.8Pr0.333(μmμw)0.14
​Go Nusselt number for liquid metals at constant wall temperature
Nu=5+0.025(ReDPr)0.8
​Go Nusselt number for constant heat flux
Nu=4.82+0.0185(ReDPr)0.827

Other formulas in Turbulent Flow category

​Go Friction factor for Re greater than 2300
f=0.25(1.82log10(ReD)-1.64)-2
​Go Friction factor for Re greater than 10000
f=0.184ReD-0.2
​Go Friction factor for rough tubes
f=1.325(ln((e3.7D)+(5.74Re0.9)))2
​Go Friction factor for transitional turbulent flow
f=0.316ReD-0.25

How to Evaluate Nusselt Number given viscosity of fluid?

Nusselt Number given viscosity of fluid evaluator uses Nusselt Number = (0.027*Reynolds Number^(0.8))*Prandtl Number^(1/3)*(Average Viscosity of Fluid/Wall Viscosity)^(0.14) to evaluate the Nusselt Number, The Nusselt Number given viscosity of fluid formula is defined as the product of ratios between average fluid viscosity and viscosity of the fluid at wall temperature. Nusselt Number is denoted by Nu symbol.

How to evaluate Nusselt Number given viscosity of fluid using this online evaluator? To use this online evaluator for Nusselt Number given viscosity of fluid, enter Reynolds Number (Re), Prandtl Number (Pr), Average Viscosity of Fluid avg) & Wall Viscosity wall) and hit the calculate button.

FAQs on Nusselt Number given viscosity of fluid

What is the formula to find Nusselt Number given viscosity of fluid?
The formula of Nusselt Number given viscosity of fluid is expressed as Nusselt Number = (0.027*Reynolds Number^(0.8))*Prandtl Number^(1/3)*(Average Viscosity of Fluid/Wall Viscosity)^(0.14). Here is an example- 10.97011 = (0.027*5000^(0.8))*0.7^(1/3)*(0.0007353/0.1)^(0.14).
How to calculate Nusselt Number given viscosity of fluid?
With Reynolds Number (Re), Prandtl Number (Pr), Average Viscosity of Fluid avg) & Wall Viscosity wall) we can find Nusselt Number given viscosity of fluid using the formula - Nusselt Number = (0.027*Reynolds Number^(0.8))*Prandtl Number^(1/3)*(Average Viscosity of Fluid/Wall Viscosity)^(0.14).
What are the other ways to Calculate Nusselt Number?
Here are the different ways to Calculate Nusselt Number-
  • Nusselt Number=0.036*(Reynolds Number Dia^0.8)*(Prandtl Number^0.33)*(Diameter/Length)^0.055OpenImg
  • Nusselt Number=0.027*Reynolds Number Dia^0.8*Prandtl Number^0.333*(Dynamic Viscosity at Mean Temperature/Dynamic Viscosity at Wall Temperature)^0.14OpenImg
  • Nusselt Number=5+0.025*(Reynolds Number Dia*Prandtl Number)^0.8OpenImg
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