Darcy friction factor Solution

STEP 0: Pre-Calculation Summary
Formula Used
Darcy Friction Factor = 64/Reynolds Number Dia
df = 64/ReD
This formula uses 2 Variables
Variables Used
Darcy Friction Factor - Darcy Friction Factor is denoted by f. Its value depends on the flow's Reynolds number Re and on the pipe's relative roughness ε / D. It can be obtained from Moody's chart.
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
df = 64/ReD --> 64/1600
Evaluating ... ...
df = 0.04
STEP 3: Convert Result to Output's Unit
0.04 --> No Conversion Required
FINAL ANSWER
0.04 <-- Darcy Friction Factor
(Calculation completed in 00.004 seconds)

Credits

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Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi
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15 Laminar Flow Calculators

Nusselt Number by Sieder-Tate for Shorter Tubes
Go Nusselt Number = ((1.86)*((Reynolds Number)^(1/3))* ((Prandtl Number)^(1/3))* ((Diameter of Tube/Length of Cylinder)^(1/3))* ((Fluid Viscosity (at fluid bulk temperature)/Fluid Viscosity (At pipe wall temperature))^(0.14)))
Nusselt number for hydrodynamic length fully developed and thermal length still developing
Go Nusselt Number = 3.66+((0.0668*(Diameter/Length)*Reynolds Number Dia*Prandtl Number)/(1+0.04*((Diameter/Length)*Reynolds Number Dia*Prandtl Number)^0.67))
Nusselt number for simultaneous development of hydrodynamic and thermal layers
Go Nusselt Number = 3.66+((0.104*(Reynolds Number Dia*Prandtl Number*(Diameter/Length)))/(1+0.16*(Reynolds Number Dia*Prandtl Number*(Diameter/Length))^0.8))
Nusselt number for simultaneous development of hydrodynamic and thermal layers for liquids
Go Nusselt Number = 1.86*(((Reynolds Number Dia*Prandtl Number)/(Length/Diameter))^0.333)*(Dynamic Viscosity at Bulk Temperature/Dynamic Viscosity at Wall Temperature)^0.14
Nusselt number for short tube thermal development
Go Nusselt Number = 1.30*((Reynolds Number Dia*Prandtl Number)/(Length/Diameter))^0.333
Nusselt number for short lengths
Go Nusselt Number = 1.67*(Reynolds Number Dia*Prandtl Number*Diameter/Length)^0.333
Diameter of thermal entry tube
Go Diameter = Length/(0.04*Reynolds Number Dia*Prandtl Number)
Thermal entry length
Go Length = 0.04*Reynolds Number Dia*Diameter*Prandtl Number
Stanton number for Colburn analogy
Go Stanton Number = Darcy Friction Factor/(8*(Prandtl Number^0.67))
Darcy friction factor for Colburn analogy
Go Darcy Friction Factor = 8*Stanton Number*Prandtl Number^0.67
Colburn's j-factor
Go Colburn's j-factor = Stanton Number*(Prandtl Number)^(2/3)
Diameter of hydrodynamic entry tube
Go Diameter = Length/(0.04*Reynolds Number Dia)
Hydrodynamic entry length
Go Length = 0.04*Diameter*Reynolds Number Dia
Darcy friction factor
Go Darcy Friction Factor = 64/Reynolds Number Dia
Reynolds Number given Darcy Friction Factor
Go Reynolds Number = 64/Darcy Friction Factor

Darcy friction factor Formula

Darcy Friction Factor = 64/Reynolds Number Dia
df = 64/ReD

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 Darcy friction factor?

Darcy friction factor calculator uses Darcy Friction Factor = 64/Reynolds Number Dia to calculate the Darcy Friction Factor, The Darcy friction factor formula is defined as a dimensionless quantity used for the description of frictional losses in pipe or duct as well as for open-channel flow. Darcy Friction Factor is denoted by df symbol.

How to calculate Darcy friction factor using this online calculator? To use this online calculator for Darcy friction factor, enter Reynolds Number Dia (ReD) and hit the calculate button. Here is how the Darcy friction factor calculation can be explained with given input values -> 0.04 = 64/1600.

FAQ

What is Darcy friction factor?
The Darcy friction factor formula is defined as a dimensionless quantity used for the description of frictional losses in pipe or duct as well as for open-channel flow and is represented as df = 64/ReD or Darcy Friction Factor = 64/Reynolds Number Dia. Reynolds Number Dia is the ratio of inertial forces to viscous forces.
How to calculate Darcy friction factor?
The Darcy friction factor formula is defined as a dimensionless quantity used for the description of frictional losses in pipe or duct as well as for open-channel flow is calculated using Darcy Friction Factor = 64/Reynolds Number Dia. To calculate Darcy friction factor, you need Reynolds Number Dia (ReD). 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 Darcy Friction Factor?
In this formula, Darcy Friction Factor uses Reynolds Number Dia. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Darcy Friction Factor = 8*Stanton Number*Prandtl Number^0.67
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