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The 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=0.27⋅((G⋅Pr)0.25)
Nu - Nusselt Number?G - Grashof Number?Pr - Prandtl Number?

Nusselt number for horizontal plate with upper surface cooled or lower surface heated Example

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Here is how the Nusselt number for horizontal plate with upper surface cooled or lower surface heated equation looks like with Values.

Here is how the Nusselt number for horizontal plate with upper surface cooled or lower surface heated equation looks like with Units.

Here is how the Nusselt number for horizontal plate with upper surface cooled or lower surface heated equation looks like.

0.2077Edit=0.27⋅((0.5Edit⋅0.7Edit)0.25)
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Nusselt number for horizontal plate with upper surface cooled or lower surface heated Solution

Follow our step by step solution on how to calculate Nusselt number for horizontal plate with upper surface cooled or lower surface heated?

FIRST Step Consider the formula
Nu=0.27⋅((G⋅Pr)0.25)
Next Step Substitute values of Variables
∴ Nu=0.27⋅((0.5⋅0.7)0.25)
Next Step Prepare to Evaluate
∴ Nu=0.27⋅((0.5⋅0.7)0.25)
Next Step Evaluate
∴Nu=0.207673353174634
LAST Step Rounding Answer
∴Nu=0.2077

Nusselt number for horizontal plate with upper surface cooled or lower surface heated Formula Elements

Variables
Nusselt Number
The 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.
Formulas to find Nusselt NumberOpen Variable
Grashof Number
Grashof number approximates the ratio of the buoyancy to viscous force acting on a fluid.
Symbol: G
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
Formulas to find Grashof NumberOpen Variable
Prandtl Number
The 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.
Formulas to find Prandtl NumberOpen Variable

Other Formulas to find Nusselt Number

​Go Nusselt number for all value of GrPr and constant heat flux
Nu=(0.825+(0.387⋅((G⋅Pr)0.167)(1+(0.437Pr)0.5625)0.296))2
​Go Nusselt number for all value of GrPr and constant wall temperature
Nu=(0.825+(0.387⋅((G⋅Pr)0.167)(1+(0.492Pr)0.5625)0.296))2
​Go Nusselt number for turbulent flow
Nu=0.10⋅((G⋅Pr)0.333)
​Go Nusselt number for horizontal plate with upper surface heated or lower surface cooled
Nu=0.54⋅((G⋅Pr)0.25)

Other formulas in Nusselt Number category

​Go Nusselt number for higher value of GrPr
NuavgL=0.59⋅(G⋅Pr)0.25
​Go Nusselt number for both constant wall temperature and heat flux
Nux=0.17⋅((Grx⋅Nu⋅Pr)0.25)
​Go Nusselt number for horizontal cylinders
NuD=(0.60+(0.387⋅(GrD⋅Pr(1+(0.559Pr)0.5625)0.296)0.167))2
​Go Nusselt Number based on Diameter for Horizontal Cylinders
NuD=0.36+(0.518⋅((GrD⋅Pr)0.25)(1+(0.559Pr)0.5625)0.444)

How to Evaluate Nusselt number for horizontal plate with upper surface cooled or lower surface heated?

Nusselt number for horizontal plate with upper surface cooled or lower surface heated evaluator uses Nusselt Number = 0.27*((Grashof Number*Prandtl Number)^0.25) to evaluate the Nusselt Number, The Nusselt number for horizontal plate with upper surface cooled or lower surface heated formula is defined as the ratio of convective to conductive heat transfer across a boundary. Nusselt Number is denoted by Nu symbol.

How to evaluate Nusselt number for horizontal plate with upper surface cooled or lower surface heated using this online evaluator? To use this online evaluator for Nusselt number for horizontal plate with upper surface cooled or lower surface heated, enter Grashof Number (G) & Prandtl Number (Pr) and hit the calculate button.

FAQs on Nusselt number for horizontal plate with upper surface cooled or lower surface heated

What is the formula to find Nusselt number for horizontal plate with upper surface cooled or lower surface heated?
The formula of Nusselt number for horizontal plate with upper surface cooled or lower surface heated is expressed as Nusselt Number = 0.27*((Grashof Number*Prandtl Number)^0.25). Here is an example- 0.207673 = 0.27*((0.5*0.7)^0.25).
How to calculate Nusselt number for horizontal plate with upper surface cooled or lower surface heated?
With Grashof Number (G) & Prandtl Number (Pr) we can find Nusselt number for horizontal plate with upper surface cooled or lower surface heated using the formula - Nusselt Number = 0.27*((Grashof Number*Prandtl Number)^0.25).
What are the other ways to Calculate Nusselt Number?
Here are the different ways to Calculate Nusselt Number-
  • Nusselt Number=(0.825+((0.387*((Grashof Number*Prandtl Number)^0.167))/((1+(0.437/Prandtl Number)^0.5625)^0.296)))^2OpenImg
  • Nusselt Number=(0.825+((0.387*((Grashof Number*Prandtl Number)^0.167))/((1+(0.492/Prandtl Number)^0.5625)^0.296)))^2OpenImg
  • Nusselt Number=0.10*((Grashof Number*Prandtl Number)^0.333)OpenImg
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