Local Nusselt number Calculator

✖Distance from Point to YY Axis is the distance from the point to the YY axis where stress is to be computed.ⓘ Distance from Point to YY Axis [x]			+10% -10%
✖Boundary layer thickens is defined as the distance from the solid body to the point at which the viscous flow velocity is 99% of the freestream velocity.ⓘ Boundary Layer Thickens [dx]			+10% -10%

✖Local Nusselt number is the ratio of convective to conductive heat transfer across a boundary.ⓘ Local Nusselt number [Nu_x]

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Formula

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Local Nusselt number

Formula

`"Nu"_{"x"} = 2*"x"/"dx"`

Example

`"6000"=2*"1.50m"/"0.0005m"`

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Local Nusselt number Solution

STEP 0: Pre-Calculation Summary

Formula Used

Local Nusselt Number = 2*Distance from Point to YY Axis/Boundary Layer Thickens
Nu_x = 2*x/dx
This formula uses 3 Variables

Variables Used

Local Nusselt Number - Local Nusselt number is the ratio of convective to conductive heat transfer across a boundary.
Distance from Point to YY Axis - (Measured in Meter) - Distance from Point to YY Axis is the distance from the point to the YY axis where stress is to be computed.
Boundary Layer Thickens - (Measured in Meter) - Boundary layer thickens is defined as the distance from the solid body to the point at which the viscous flow velocity is 99% of the freestream velocity.

STEP 1: Convert Input(s) to Base Unit

Distance from Point to YY Axis: 1.5 Meter --> 1.5 Meter No Conversion Required
Boundary Layer Thickens: 0.0005 Meter --> 0.0005 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Nu_x = 2*x/dx --> 2*1.5/0.0005

Evaluating ... ...

Nu_x = 6000

STEP 3: Convert Result to Output's Unit

6000 --> No Conversion Required

FINAL ANSWER

6000 <-- Local Nusselt Number

(Calculation completed in 00.004 seconds)

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Created by Nishan Poojary

Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi

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< 7 Local and Average Nusselt Number Calculators

Average Nusselt number for constant wall temperature

Go Average Nusselt Number = 0.68+((0.67*((Grashof Number*Prandtl Number)^0.25))/((1+(0.492/Prandtl Number)^0.5625)^0.444))

Local Nusselt number for constant heat flux

Go Local Nusselt Number = 0.508*(Prandtl Number^0.5)*((0.952+Prandtl Number)^(-0.25))*(Local Grashof Number^0.25)

Local Nusselt number

Go Local Nusselt Number = 2*Distance from Point to YY Axis/Boundary Layer Thickens

Local Nusselt number given Grashof number

Go Local Nusselt Number = 0.6*((Local Grashof Number*Prandtl Number)^0.2)

Local Nusselt number for constant heat flux for Grashof number

Go Local Nusselt Number = 0.17*((Grashof Number*Prandtl Number)^0.25)

Average Nusselt number upto L

Go Average Nusselt Number = (5/4)*Nusselt Number(L)

Average Nusselt number upto length L for constant heat flux

Go Average Nusselt Number = (5/4)*Nusselt Number

Local Nusselt number Formula

Local Nusselt Number = 2*Distance from Point to YY Axis/Boundary Layer Thickens
Nu_x = 2*x/dx

What is convection?

Convection is the process of heat transfer by the bulk movement of molecules within fluids such as gases and liquids. The initial heat transfer between the object and the fluid takes place through conduction, but the bulk heat transfer happens due to the motion of the fluid.

Convection is the process of heat transfer in fluids by the actual motion of matter.
It happens in liquids and gases.
It may be natural or forced.
It involves a bulk transfer of portions of the fluid.

How to Calculate Local Nusselt number?

Local Nusselt number calculator uses Local Nusselt Number = 2*Distance from Point to YY Axis/Boundary Layer Thickens to calculate the Local Nusselt Number, The Local Nusselt number formula is defined as the ratio of convective to conductive heat transfer across a boundary. Local Nusselt Number is denoted by Nu_x symbol.

How to calculate Local Nusselt number using this online calculator? To use this online calculator for Local Nusselt number, enter Distance from Point to YY Axis (x) & Boundary Layer Thickens (dx) and hit the calculate button. Here is how the Local Nusselt number calculation can be explained with given input values -> 6000 = 2*1.5/0.0005.

FAQ

What is Local Nusselt number?

The Local Nusselt number formula is defined as the ratio of convective to conductive heat transfer across a boundary and is represented as Nu_x = 2*x/dx or Local Nusselt Number = 2*Distance from Point to YY Axis/Boundary Layer Thickens. Distance from Point to YY Axis is the distance from the point to the YY axis where stress is to be computed & Boundary layer thickens is defined as the distance from the solid body to the point at which the viscous flow velocity is 99% of the freestream velocity.

How to calculate Local Nusselt number?

The Local Nusselt number formula is defined as the ratio of convective to conductive heat transfer across a boundary is calculated using Local Nusselt Number = 2*Distance from Point to YY Axis/Boundary Layer Thickens. To calculate Local Nusselt number, you need Distance from Point to YY Axis (x) & Boundary Layer Thickens (dx). With our tool, you need to enter the respective value for Distance from Point to YY Axis & Boundary Layer Thickens and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Local Nusselt Number?

In this formula, Local Nusselt Number uses Distance from Point to YY Axis & Boundary Layer Thickens. We can use 3 other way(s) to calculate the same, which is/are as follows -

Local Nusselt Number = 0.508*(Prandtl Number^0.5)*((0.952+Prandtl Number)^(-0.25))*(Local Grashof Number^0.25)
Local Nusselt Number = 0.6*((Local Grashof Number*Prandtl Number)^0.2)
Local Nusselt Number = 0.17*((Grashof Number*Prandtl Number)^0.25)

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