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Nusselt Number is the ratio of convective to conductive heat transfer at a boundary in a fluid. Convection includes both advection and diffusion. Check FAQs
Nu=0.023(Re)0.8(Pr)0.3
Nu - Nusselt Number?Re - Reynolds Number?Pr - Prandtl Number?

Nusselt Number using Dittus Boelter Equation for Cooling Example

With values
With units
Only example

Here is how the Nusselt Number using Dittus Boelter Equation for Cooling equation looks like with Values.

Here is how the Nusselt Number using Dittus Boelter Equation for Cooling equation looks like with Units.

Here is how the Nusselt Number using Dittus Boelter Equation for Cooling equation looks like.

18.8119Edit=0.023(5000Edit)0.8(0.7Edit)0.3
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Nusselt Number using Dittus Boelter Equation for Cooling Solution

Follow our step by step solution on how to calculate Nusselt Number using Dittus Boelter Equation for Cooling?

FIRST Step Consider the formula
Nu=0.023(Re)0.8(Pr)0.3
Next Step Substitute values of Variables
Nu=0.023(5000)0.8(0.7)0.3
Next Step Prepare to Evaluate
Nu=0.023(5000)0.8(0.7)0.3
Next Step Evaluate
Nu=18.811925557594
LAST Step Rounding Answer
Nu=18.8119

Nusselt Number using Dittus Boelter Equation for Cooling Formula Elements

Variables
Nusselt Number
Nusselt Number is the ratio of convective to conductive heat transfer at a boundary in a fluid. Convection includes both advection and diffusion.
Symbol: Nu
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Reynolds Number
Reynolds number is the ratio of inertial forces to viscous forces within a fluid which is subjected to relative internal movement due to different fluid velocities.
Symbol: Re
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Prandtl Number
Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity.
Symbol: Pr
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.

Other Formulas to find Nusselt Number

​Go Nusselt Number for Transitional and Rough Flow in Circular Tube
Nu=(fDarcy8)(Re-1000)Pr1+12.7((fDarcy8)0.5)((Pr)23-1)
​Go Nusselt Number using Dittus Boelter Equation for Heating
Nu=0.023(Re)0.8(Pr)0.4

Other formulas in Co Relation of Dimensionless Numbers category

​Go Reynolds Number for Circular Tubes
Re=ρuFluidDTubeμviscosity
​Go Reynolds Number for Non-Circular Tubes
Re=ρuFluidLcμviscosity
​Go Prandtl Number
Pr=cμviscosityk
​Go Stanton Number using Dimensionless Numbers
St=NuRePr

How to Evaluate Nusselt Number using Dittus Boelter Equation for Cooling?

Nusselt Number using Dittus Boelter Equation for Cooling evaluator uses Nusselt Number = 0.023*(Reynolds Number)^0.8*(Prandtl Number)^0.3 to evaluate the Nusselt Number, The Nusselt Number using Dittus Boelter Equation for Cooling formula is for fully developed turbulent flow in a smooth circular tube, the local Nusselt number may be obtained from this equation. Nusselt Number is denoted by Nu symbol.

How to evaluate Nusselt Number using Dittus Boelter Equation for Cooling using this online evaluator? To use this online evaluator for Nusselt Number using Dittus Boelter Equation for Cooling, enter Reynolds Number (Re) & Prandtl Number (Pr) and hit the calculate button.

FAQs on Nusselt Number using Dittus Boelter Equation for Cooling

What is the formula to find Nusselt Number using Dittus Boelter Equation for Cooling?
The formula of Nusselt Number using Dittus Boelter Equation for Cooling is expressed as Nusselt Number = 0.023*(Reynolds Number)^0.8*(Prandtl Number)^0.3. Here is an example- 18.81193 = 0.023*(5000)^0.8*(0.7)^0.3.
How to calculate Nusselt Number using Dittus Boelter Equation for Cooling?
With Reynolds Number (Re) & Prandtl Number (Pr) we can find Nusselt Number using Dittus Boelter Equation for Cooling using the formula - Nusselt Number = 0.023*(Reynolds Number)^0.8*(Prandtl Number)^0.3.
What are the other ways to Calculate Nusselt Number?
Here are the different ways to Calculate Nusselt Number-
  • Nusselt Number=(Darcy Friction Factor/8)*(Reynolds Number-1000)*Prandtl Number/(1+12.7*((Darcy Friction Factor/8)^(0.5))*((Prandtl Number)^(2/3)-1))OpenImg
  • Nusselt Number=0.023*(Reynolds Number)^0.8*(Prandtl Number)^0.4OpenImg
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