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Length is the measurement or extent of something from end to end. Check FAQs
L=0.04⋅D⋅ReD
L - Length?D - Diameter?ReD - Reynolds Number Dia?

Hydrodynamic entry length Example

With values
With units
Only example

Here is how the Hydrodynamic entry length equation looks like with Values.

Here is how the Hydrodynamic entry length equation looks like with Units.

Here is how the Hydrodynamic entry length equation looks like.

640Edit=0.04⋅10Edit⋅1600Edit
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HomeIcon Home » Category Physics » Category Mechanical » Category Heat and Mass Transfer » fx Hydrodynamic entry length

Hydrodynamic entry length Solution

Follow our step by step solution on how to calculate Hydrodynamic entry length?

FIRST Step Consider the formula
L=0.04⋅D⋅ReD
Next Step Substitute values of Variables
∴ L=0.04⋅10m⋅1600
Next Step Prepare to Evaluate
∴ L=0.04⋅10⋅1600
LAST Step Evaluate
∴L=640m

Hydrodynamic entry length Formula Elements

Variables
Length
Length is the measurement or extent of something from end to end.
Symbol: L
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Formulas to find LengthOpen Variable
Diameter
Diameter is a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
Symbol: D
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Formulas to find DiameterOpen Variable
Reynolds Number Dia
Reynolds Number Dia is the ratio of inertial forces to viscous forces.
Symbol: ReD
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Reynolds Number DiaOpen Variable

Other Formulas to find Length

​Go Thermal entry length
L=0.04⋅ReD⋅D⋅Pr

Other formulas in Laminar Flow category

​Go Darcy friction factor
df=64ReD
​Go Reynolds Number given Darcy Friction Factor
Re=64df
​Go Diameter of hydrodynamic entry tube
D=L0.04⋅ReD
​Go Diameter of thermal entry tube
D=L0.04⋅ReD⋅Pr

How to Evaluate Hydrodynamic entry length?

Hydrodynamic entry length evaluator uses Length = 0.04*Diameter*Reynolds Number Dia to evaluate the Length, The Hydrodynamic entry length formula is defined as the duct length required to achieve a duct section maximum velocity of 99% of the corresponding fully developed magnitude when the entering flow is uniform. Length is denoted by L symbol.

How to evaluate Hydrodynamic entry length using this online evaluator? To use this online evaluator for Hydrodynamic entry length, enter Diameter (D) & Reynolds Number Dia (ReD) and hit the calculate button.

FAQs on Hydrodynamic entry length

What is the formula to find Hydrodynamic entry length?
The formula of Hydrodynamic entry length is expressed as Length = 0.04*Diameter*Reynolds Number Dia. Here is an example- 640 = 0.04*10*1600.
How to calculate Hydrodynamic entry length?
With Diameter (D) & Reynolds Number Dia (ReD) we can find Hydrodynamic entry length using the formula - Length = 0.04*Diameter*Reynolds Number Dia.
What are the other ways to Calculate Length?
Here are the different ways to Calculate Length-
  • Length=0.04*Reynolds Number Dia*Diameter*Prandtl NumberOpenImg
Can the Hydrodynamic entry length be negative?
No, the Hydrodynamic entry length, measured in Length cannot be negative.
Which unit is used to measure Hydrodynamic entry length?
Hydrodynamic entry length is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Hydrodynamic entry length can be measured.
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