Diameter of thermal entry tube Calculator

✖Length is the measurement or extent of something from end to end.ⓘ Length [L]			+10% -10%
✖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%

✖Diameter is a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.ⓘ Diameter of thermal entry tube [D]

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Diameter of thermal entry tube Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diameter = Length/(0.04*Reynolds Number Dia*Prandtl Number)
D = L/(0.04*Re_D*Pr)
This formula uses 4 Variables

Variables Used

Diameter - (Measured in Meter) - Diameter is a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
Length - (Measured in Meter) - Length is the measurement or extent of something from end to end.
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

Length: 3 Meter --> 3 Meter No Conversion Required
Reynolds Number Dia: 1600 --> No Conversion Required
Prandtl Number: 0.7 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

D = L/(0.04*Re_D*Pr) --> 3/(0.04*1600*0.7)

Evaluating ... ...

D = 0.0669642857142857

STEP 3: Convert Result to Output's Unit

0.0669642857142857 Meter --> No Conversion Required

FINAL ANSWER

0.0669642857142857 ≈ 0.066964 Meter <-- Diameter

(Calculation completed in 00.004 seconds)

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Home » Physics » Heat and Mass Transfer » Internal Flow » Flow inside tubes » Mechanical » Laminar Flow » Diameter of thermal entry tube

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Created by Nishan Poojary

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

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< Laminar Flow Calculators

Diameter of hydrodynamic entry tube

LaTeX Go Diameter = Length/(0.04*Reynolds Number Dia)

Hydrodynamic entry length

LaTeX Go Length = 0.04*Diameter*Reynolds Number Dia

Darcy friction factor

LaTeX Go Darcy Friction Factor = 64/Reynolds Number Dia

Reynolds Number given Darcy Friction Factor

LaTeX Go Reynolds Number = 64/Darcy Friction Factor

Diameter of thermal entry tube Formula

LaTeX Go

Diameter = Length/(0.04*Reynolds Number Dia*Prandtl Number)
D = L/(0.04*Re_D*Pr)

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 Diameter of thermal entry tube?

Diameter of thermal entry tube calculator uses Diameter = Length/(0.04*Reynolds Number Dia*Prandtl Number) to calculate the Diameter, The Diameter of thermal entry tube formula is defined as the size for incoming flow in a pipe to form a temperature profile of stable shape. Diameter is denoted by D symbol.

How to calculate Diameter of thermal entry tube using this online calculator? To use this online calculator for Diameter of thermal entry tube, enter Length (L), Reynolds Number Dia (Re_D) & Prandtl Number (Pr) and hit the calculate button. Here is how the Diameter of thermal entry tube calculation can be explained with given input values -> 0.066964 = 3/(0.04*1600*0.7).

FAQ

What is Diameter of thermal entry tube?

The Diameter of thermal entry tube formula is defined as the size for incoming flow in a pipe to form a temperature profile of stable shape and is represented as D = L/(0.04*Re_D*Pr) or Diameter = Length/(0.04*Reynolds Number Dia*Prandtl Number). Length is the measurement or extent of something from end to end, 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 Diameter of thermal entry tube?

The Diameter of thermal entry tube formula is defined as the size for incoming flow in a pipe to form a temperature profile of stable shape is calculated using Diameter = Length/(0.04*Reynolds Number Dia*Prandtl Number). To calculate Diameter of thermal entry tube, you need Length (L), Reynolds Number Dia (Re_D) & Prandtl Number (Pr). With our tool, you need to enter the respective value for Length, 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 Diameter?

In this formula, Diameter uses Length, Reynolds Number Dia & Prandtl Number. We can use 1 other way(s) to calculate the same, which is/are as follows -

Diameter = Length/(0.04*Reynolds Number Dia)

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