FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Average Nusselt number for constant wall temperature Formula

GoAverage Nusselt number upto L Formula

GoAverage Nusselt number upto length L for constant heat flux Formula

Fx Copy

LaTeX Copy

Average Nusselt number is the ratio between heat transfer by convection (α) and heat transfer by conduction alone. Check FAQs

Nu avgl = 0.68 + (\frac{0.67 \cdot ({(G \cdot Pr)}^{0.25})}{{(1 + {(\frac{0.492}{Pr})}^{0.5625})}^{0.444}})

Nu_avgl - Average Nusselt Number?G - Grashof Number?Pr - Prandtl Number?

Average Nusselt number for constant wall temperature Example

With values

With units

Only example

Here is how the Average Nusselt number for constant wall temperature equation looks like with Values.

Here is how the Average Nusselt number for constant wall temperature equation looks like with Units.

Here is how the Average Nusselt number for constant wall temperature equation looks like.

1.075 = 0.68 + (\frac{0.67 \cdot ({(0.5 \cdot 0.7)}^{0.25})}{{(1 + {(\frac{0.492}{0.7})}^{0.5625})}^{0.444}})

1.075 = 0.68 + (\frac{0.67 \cdot ({(0.5 \cdot 0.7)}^{0.25})}{{(1 + {(\frac{0.492}{0.7})}^{0.5625})}^{0.444}})

1.075 = 0.68 + (\frac{0.67 \cdot ({(0.5 \cdot 0.7)}^{0.25})}{{(1 + {(\frac{0.492}{0.7})}^{0.5625})}^{0.444}})

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Physics » Category

Mechanical » Category

Heat and Mass Transfer » fx Average Nusselt number for constant wall temperature

Average Nusselt number for constant wall temperature Solution

Follow our step by step solution on how to calculate Average Nusselt number for constant wall temperature?

FIRST Step Consider the formula

Nu avgl = 0.68 + (\frac{0.67 \cdot ({(G \cdot Pr)}^{0.25})}{{(1 + {(\frac{0.492}{Pr})}^{0.5625})}^{0.444}})

Next Step Substitute values of Variables

∴

Nu avgl = 0.68 + (\frac{0.67 \cdot ({(0.5 \cdot 0.7)}^{0.25})}{{(1 + {(\frac{0.492}{0.7})}^{0.5625})}^{0.444}})

Next Step Prepare to Evaluate

∴

Nu avgl = 0.68 + (\frac{0.67 \cdot ({(0.5 \cdot 0.7)}^{0.25})}{{(1 + {(\frac{0.492}{0.7})}^{0.5625})}^{0.444}})

Next Step Evaluate

∴

Nu avgl = 1.07501204712118

LAST Step Rounding Answer

∴

Nu avgl = 1.075

Average Nusselt number for constant wall temperature Formula Elements

Variables

Average Nusselt Number

Average Nusselt number is the ratio between heat transfer by convection (α) and heat transfer by conduction alone.

Symbol: Nu_avgl

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Average Nusselt Number

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 Number

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 Number

Other Formulas to find Average Nusselt Number

Go Average Nusselt number upto L

Nu avgl = (\frac{5}{4}) \cdot Nu L

Go Average Nusselt number upto length L for constant heat flux

Nu avgl = (\frac{5}{4}) \cdot Nu d

Other formulas in Local and Average Nusselt Number category

Go Local Nusselt number

Nu x = 2 \cdot \frac{x}{dx}

Go Local Nusselt number for constant heat flux

Nu x = 0.508 \cdot ({Pr}^{0.5}) \cdot ({(0.952 + Pr)}^{- 0.25}) \cdot ({Gr x}^{0.25})

Go Local Nusselt number given Grashof number

Nu x = 0.6 \cdot ({(Gr x \cdot Pr)}^{0.2})

Go Local Nusselt number for constant heat flux for Grashof number

Nu x = 0.17 \cdot ({(G \cdot Pr)}^{0.25})

How to Evaluate Average Nusselt number for constant wall temperature?

Average Nusselt number for constant wall temperature evaluator uses Average Nusselt Number = 0.68+((0.67*((Grashof Number*Prandtl Number)^0.25))/((1+(0.492/Prandtl Number)^0.5625)^0.444)) to evaluate the Average Nusselt Number, The Average Nusselt number for constant wall temperature formula is defined as the ratio of convective to conductive heat transfer across a boundary. Average Nusselt Number is denoted by Nu_avgl symbol.

How to evaluate Average Nusselt number for constant wall temperature using this online evaluator? To use this online evaluator for Average Nusselt number for constant wall temperature, enter Grashof Number (G) & Prandtl Number (Pr) and hit the calculate button.

FAQs on Average Nusselt number for constant wall temperature

What is the formula to find Average Nusselt number for constant wall temperature?

The formula of Average Nusselt number for constant wall temperature is expressed as Average Nusselt Number = 0.68+((0.67*((Grashof Number*Prandtl Number)^0.25))/((1+(0.492/Prandtl Number)^0.5625)^0.444)). Here is an example- 1.075012 = 0.68+((0.67*((0.5*0.7)^0.25))/((1+(0.492/0.7)^0.5625)^0.444)).

How to calculate Average Nusselt number for constant wall temperature?

With Grashof Number (G) & Prandtl Number (Pr) we can find Average Nusselt number for constant wall temperature using the formula - Average Nusselt Number = 0.68+((0.67*((Grashof Number*Prandtl Number)^0.25))/((1+(0.492/Prandtl Number)^0.5625)^0.444)).

What are the other ways to Calculate Average Nusselt Number?

Here are the different ways to Calculate Average Nusselt Number-

Average Nusselt Number=(5/4)*Nusselt Number(L)
Average Nusselt Number=(5/4)*Nusselt Number at Distance l from Leading Edge

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Average Nusselt number for constant wall temperature Formula

​GoAverage Nusselt number upto L Formula

​GoAverage Nusselt number upto length L for constant heat flux Formula

Average Nusselt number for constant wall temperature Example

Average Nusselt number for constant wall temperature Solution

Average Nusselt number for constant wall temperature Formula Elements

Other Formulas to find Average Nusselt Number

Other formulas in Local and Average Nusselt Number category

How to Evaluate Average Nusselt number for constant wall temperature?

FAQs on Average Nusselt number for constant wall temperature

Variable Name

GoAverage Nusselt number upto L Formula

GoAverage Nusselt number upto length L for constant heat flux Formula