Nusselt number for thermal entry region Calculator

✖Reynolds Number Dia is the ratio of inertial forces to viscous forces.ⓘ Reynolds Number Dia [Re_D]

+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 thermal entry region [Nu]

⎘ Copy

👎

Formula

✖

Nusselt number for thermal entry region

Formula

Nu = 3.0 \cdot {Re D}^{0.0833}

Example

5.546569 = 3.0 \cdot 1600^{0.0833}

Calculator

LaTeX

Reset

👍

Download Internal Flow Formula PDF PDF Image

Nusselt number for thermal entry region Solution

STEP 0: Pre-Calculation Summary

Formula Used

Nusselt Number = 3.0*Reynolds Number Dia^0.0833
Nu = 3.0*Re_D^0.0833
This formula uses 2 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.

STEP 1: Convert Input(s) to Base Unit

Reynolds Number Dia: 1600 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Nu = 3.0*Re_D^0.0833 --> 3.0*1600^0.0833

Evaluating ... ...

Nu = 5.54656937343187

STEP 3: Convert Result to Output's Unit

5.54656937343187 --> No Conversion Required

FINAL ANSWER

5.54656937343187 ≈ 5.546569 <-- Nusselt Number

(Calculation completed in 00.004 seconds)

You are here -

Home » Physics » Heat and Mass Transfer » Internal Flow » Flow inside tubes » Mechanical » Turbulent Flow » Nusselt number for thermal entry region

Credits

Created by Nishan Poojary

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

Nishan Poojary has created this Calculator and 500+ more calculators!

Verified by Rajat Vishwakarma

University Institute of Technology RGPV (UIT - RGPV), Bhopal

Rajat Vishwakarma has verified this Calculator and 400+ more calculators!

< Turbulent Flow Calculators

Friction factor for rough tubes

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

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

Friction factor for Re greater than 10000

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

Friction factor for transitional turbulent flow

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

Nusselt number for thermal entry region Formula

Nusselt Number = 3.0*Reynolds Number Dia^0.0833
Nu = 3.0*Re_D^0.0833

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 thermal entry region?

Nusselt number for thermal entry region calculator uses Nusselt Number = 3.0*Reynolds Number Dia^0.0833 to calculate the Nusselt Number, The Nusselt number for thermal entry region formula is defined as 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 thermal entry region using this online calculator? To use this online calculator for Nusselt number for thermal entry region, enter Reynolds Number Dia (Re_D) and hit the calculate button. Here is how the Nusselt number for thermal entry region calculation can be explained with given input values -> 5.546569 = 3.0*1600^0.0833.

FAQ

What is Nusselt number for thermal entry region?

The Nusselt number for thermal entry region formula is defined as a measure of the ratio between heat transfer by convection (α) and heat transfer by conduction alone and is represented as Nu = 3.0*Re_D^0.0833 or Nusselt Number = 3.0*Reynolds Number Dia^0.0833. Reynolds Number Dia is the ratio of inertial forces to viscous forces.

How to calculate Nusselt number for thermal entry region?

The Nusselt number for thermal entry region formula is defined as a measure of the ratio between heat transfer by convection (α) and heat transfer by conduction alone is calculated using Nusselt Number = 3.0*Reynolds Number Dia^0.0833. To calculate Nusselt number for thermal entry region, you need Reynolds Number Dia (Re_D). With our tool, you need to enter the respective value for Reynolds Number Dia 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. 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

Home

FREE PDFs

🔍 Search