Nusselt number for constant heat flux Calculator

✖Reynolds Number Dia is the ratio of inertial forces to viscous forces.ⓘ Reynolds Number Dia [Re_D]			+10% -10%
✖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.ⓘ Prandtl Number [Pr]			+10% -10%

✖The Nusselt Number is the ratio of convective to conductive heat transfer at a boundary in a fluid. Convection includes both advection and diffusion.ⓘ Nusselt number for constant heat flux [Nu]

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Nusselt number for constant heat flux Solution

STEP 0: Pre-Calculation Summary

Formula Used

Nusselt Number = 4.82+0.0185*(Reynolds Number Dia*Prandtl Number)^0.827
Nu = 4.82+0.0185*(Re_D*Pr)^0.827
This formula uses 3 Variables

Variables Used

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.
Reynolds Number Dia - Reynolds Number Dia is the ratio of inertial forces to viscous forces.
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.

STEP 1: Convert Input(s) to Base Unit

Reynolds Number Dia: 1600 --> No Conversion Required
Prandtl Number: 0.7 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Nu = 4.82+0.0185*(Re_D*Pr)^0.827 --> 4.82+0.0185*(1600*0.7)^0.827

Evaluating ... ...

Nu = 10.9699988299677

STEP 3: Convert Result to Output's Unit

10.9699988299677 --> No Conversion Required

FINAL ANSWER

10.9699988299677 ≈ 10.97 <-- Nusselt Number

(Calculation completed in 00.004 seconds)

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< Turbulent Flow Calculators

Friction factor for rough tubes

LaTeX Go Friction Factor = 1.325/((ln((Surface Roughness/3.7*Diameter)+(5.74/(Reynolds Number^0.9))))^2)

Friction factor for Re greater than 2300

LaTeX Go Friction Factor = 0.25*(1.82*log10(Reynolds Number Dia)-1.64)^-2

Friction factor for Re greater than 10000

LaTeX Go Friction Factor = 0.184*Reynolds Number Dia^(-0.2)

Friction factor for transitional turbulent flow

LaTeX Go Friction Factor = 0.316*Reynolds Number Dia^-0.25

Nusselt number for constant heat flux Formula

LaTeX Go

Nusselt Number = 4.82+0.0185*(Reynolds Number Dia*Prandtl Number)^0.827
Nu = 4.82+0.0185*(Re_D*Pr)^0.827

What is internal flow

Internal flow is a flow for which the fluid is confined by a surface. Hence the boundary layer is unable to develop without eventually being constrained. The internal flow configuration represents a convenient geometry for heating and cooling fluids used in chemical processing, environmental control, and energy conversion technologies.
An example includes flow in a pipe.

How to Calculate Nusselt number for constant heat flux?

Nusselt number for constant heat flux calculator uses Nusselt Number = 4.82+0.0185*(Reynolds Number Dia*Prandtl Number)^0.827 to calculate the Nusselt Number, The Nusselt number for constant heat flux formula is defined as is a measure of the ratio between heat transfer by convection (α) and heat transfer by conduction alone. Nusselt Number is denoted by Nu symbol.

How to calculate Nusselt number for constant heat flux using this online calculator? To use this online calculator for Nusselt number for constant heat flux, enter Reynolds Number Dia (Re_D) & Prandtl Number (Pr) and hit the calculate button. Here is how the Nusselt number for constant heat flux calculation can be explained with given input values -> 10.97 = 4.82+0.0185*(1600*0.7)^0.827.

FAQ

What is Nusselt number for constant heat flux?

The Nusselt number for constant heat flux formula is defined as is a measure of the ratio between heat transfer by convection (α) and heat transfer by conduction alone and is represented as Nu = 4.82+0.0185*(Re_D*Pr)^0.827 or Nusselt Number = 4.82+0.0185*(Reynolds Number Dia*Prandtl Number)^0.827. Reynolds Number Dia is the ratio of inertial forces to viscous forces & 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.

How to calculate Nusselt number for constant heat flux?

The Nusselt number for constant heat flux formula is defined as is a measure of the ratio between heat transfer by convection (α) and heat transfer by conduction alone is calculated using Nusselt Number = 4.82+0.0185*(Reynolds Number Dia*Prandtl Number)^0.827. To calculate Nusselt number for constant heat flux, you need Reynolds Number Dia (Re_D) & Prandtl Number (Pr). With our tool, you need to enter the respective value for Reynolds Number Dia & Prandtl Number 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 Nusselt Number?

In this formula, Nusselt Number uses Reynolds Number Dia & Prandtl Number. We can use 3 other way(s) to calculate the same, which is/are as follows -

Nusselt Number = 0.036*(Reynolds Number Dia^0.8)*(Prandtl Number^0.33)*(Diameter/Length)^0.055
Nusselt Number = 0.027*(Reynolds Number Dia^0.8)*(Prandtl Number^0.333)*(Dynamic Viscosity at Mean Temperature/Dynamic Viscosity at Wall Temperature)^0.14
Nusselt Number = 5+0.025*(Reynolds Number Dia*Prandtl Number)^0.8

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