Hydrodynamic entry length Calculator

✖The Diameter of Hydrodynamic Entry Tube is the width of the tube where fluid enters, influencing flow characteristics and pressure drop in laminar flow conditions.ⓘ Diameter of Hydrodynamic Entry Tube [D_hd]			+10% -10%
✖The Reynolds Number Dia is a dimensionless quantity that helps predict flow patterns in fluid mechanics, specifically for laminar flow in tubes based on diameter.ⓘ Reynolds Number Dia [Re_D]			+10% -10%

✖The Length is the measurement of the distance along the flow direction in a laminar flow scenario within tubes, influencing flow characteristics and heat transfer efficiency.ⓘ Hydrodynamic entry length [L]

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Hydrodynamic entry length Solution

STEP 0: Pre-Calculation Summary

Formula Used

Length = 0.04*Diameter of Hydrodynamic Entry Tube*Reynolds Number Dia
L = 0.04*D_hd*Re_D
This formula uses 3 Variables

Variables Used

Length - (Measured in Meter) - The Length is the measurement of the distance along the flow direction in a laminar flow scenario within tubes, influencing flow characteristics and heat transfer efficiency.
Diameter of Hydrodynamic Entry Tube - (Measured in Meter) - The Diameter of Hydrodynamic Entry Tube is the width of the tube where fluid enters, influencing flow characteristics and pressure drop in laminar flow conditions.
Reynolds Number Dia - The Reynolds Number Dia is a dimensionless quantity that helps predict flow patterns in fluid mechanics, specifically for laminar flow in tubes based on diameter.

STEP 1: Convert Input(s) to Base Unit

Diameter of Hydrodynamic Entry Tube: 0.046875 Meter --> 0.046875 Meter No Conversion Required
Reynolds Number Dia: 1600 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

L = 0.04*D_hd*Re_D --> 0.04*0.046875*1600

Evaluating ... ...

L = 3

STEP 3: Convert Result to Output's Unit

3 Meter --> No Conversion Required

FINAL ANSWER

3 Meter <-- Length

(Calculation completed in 00.004 seconds)

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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 Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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< Laminar Flow Calculators

Diameter of hydrodynamic entry tube

LaTeX Go Diameter of Hydrodynamic Entry Tube = Length/(0.04*Reynolds Number Dia)

Hydrodynamic entry length

LaTeX Go Length = 0.04*Diameter of Hydrodynamic Entry Tube*Reynolds Number Dia

Reynolds Number given Darcy Friction Factor

LaTeX Go Reynolds Number Dia = 64/Darcy Friction Factor

Darcy friction factor

LaTeX Go Darcy Friction Factor = 64/Reynolds Number Dia

Hydrodynamic entry length Formula

LaTeX Go

Length = 0.04*Diameter of Hydrodynamic Entry Tube*Reynolds Number Dia
L = 0.04*D_hd*Re_D

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 Hydrodynamic entry length?

Hydrodynamic entry length calculator uses Length = 0.04*Diameter of Hydrodynamic Entry Tube*Reynolds Number Dia to calculate the Length, Hydrodynamic entry length formula is defined as a measure of the distance required for a fluid to develop a fully developed flow profile within a tube, influenced by the tube diameter and the Reynolds number of the flow. Length is denoted by L symbol.

How to calculate Hydrodynamic entry length using this online calculator? To use this online calculator for Hydrodynamic entry length, enter Diameter of Hydrodynamic Entry Tube (D_hd) & Reynolds Number Dia (Re_D) and hit the calculate button. Here is how the Hydrodynamic entry length calculation can be explained with given input values -> 640 = 0.04*0.046875*1600.

FAQ

What is Hydrodynamic entry length?

Hydrodynamic entry length formula is defined as a measure of the distance required for a fluid to develop a fully developed flow profile within a tube, influenced by the tube diameter and the Reynolds number of the flow and is represented as L = 0.04*D_hd*Re_D or Length = 0.04*Diameter of Hydrodynamic Entry Tube*Reynolds Number Dia. The Diameter of Hydrodynamic Entry Tube is the width of the tube where fluid enters, influencing flow characteristics and pressure drop in laminar flow conditions & The Reynolds Number Dia is a dimensionless quantity that helps predict flow patterns in fluid mechanics, specifically for laminar flow in tubes based on diameter.

How to calculate Hydrodynamic entry length?

Hydrodynamic entry length formula is defined as a measure of the distance required for a fluid to develop a fully developed flow profile within a tube, influenced by the tube diameter and the Reynolds number of the flow is calculated using Length = 0.04*Diameter of Hydrodynamic Entry Tube*Reynolds Number Dia. To calculate Hydrodynamic entry length, you need Diameter of Hydrodynamic Entry Tube (D_hd) & Reynolds Number Dia (Re_D). With our tool, you need to enter the respective value for Diameter of Hydrodynamic Entry Tube & 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 Length?

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

Length = 0.04*Reynolds Number Dia*Diameter of Thermal Entry Tube*Prandtl Number

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