Blasius Equation Calculator

✖The Roughness Reynold Number is a dimensionless number used in fluid dynamics to characterize the influence of surface roughness on flow behavior.ⓘ Roughness Reynold Number [Re]

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✖The Friction Factor or Moody chart is the plot of the relative roughness (e/D) of a pipe against Reynold's number.ⓘ Blasius Equation [f]

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Blasius Equation Solution

STEP 0: Pre-Calculation Summary

Formula Used

Friction Factor = (0.316)/(Roughness Reynold Number^(1/4))
f = (0.316)/(Re^(1/4))
This formula uses 2 Variables

Variables Used

Friction Factor - The Friction Factor or Moody chart is the plot of the relative roughness (e/D) of a pipe against Reynold's number.
Roughness Reynold Number - The Roughness Reynold Number is a dimensionless number used in fluid dynamics to characterize the influence of surface roughness on flow behavior.

STEP 1: Convert Input(s) to Base Unit

Roughness Reynold Number: 10 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f = (0.316)/(Re^(1/4)) --> (0.316)/(10^(1/4))

Evaluating ... ...

f = 0.17769985876015

STEP 3: Convert Result to Output's Unit

0.17769985876015 --> No Conversion Required

FINAL ANSWER

0.17769985876015 ≈ 0.1777 <-- Friction Factor

(Calculation completed in 00.020 seconds)

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Home » Physics » Fluid Mechanics » Forces and Dynamics » Dynamics of Fluid Flow » Mechanical » Turbulent Flow » Blasius Equation

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Created by Shareef Alex

velagapudi ramakrishna siddhartha engineering college (vr siddhartha engineering college), vijayawada

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National Institute Of Technology (NIT), Hamirpur

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< Turbulent Flow Calculators

Average Height of Irregularities for Turbulent Flow in Pipes

LaTeX Go Average Height Irregularities = (Kinematic Viscosity*Roughness Reynold Number)/Shear Velocity

Roughness Reynold Number for Turbulent Flow in Pipes

LaTeX Go Roughness Reynold Number = (Average Height Irregularities*Shear Velocity)/Kinematic Viscosity

Shear Velocity for Turbulent Flow in Pipes

LaTeX Go Shear Velocity = sqrt(Shear Stress/Density of Fluid)

Shear Stress Developed for Turbulent Flow in Pipes

LaTeX Go Shear Stress = Density of Fluid*Shear Velocity^2

Blasius Equation Formula

LaTeX Go

Friction Factor = (0.316)/(Roughness Reynold Number^(1/4))
f = (0.316)/(Re^(1/4))

What is the Blasius equation used for?

Blasius equation used for turbulent flow. Download software solutions calculations of fluid mechanics.

What is Blasius flow?

Blasius was. Two-dimensional, steady, incompressible flow over a flat plate at zero angles of incidence with respect to the uniform stream of velocity. The fluid extends to infinity in all directions from the plate.

How to Calculate Blasius Equation?

Blasius Equation calculator uses Friction Factor = (0.316)/(Roughness Reynold Number^(1/4)) to calculate the Friction Factor, The Blasius Equation formula is defined as the steady two-dimensional laminar boundary layer that forms on a semi-infinite plate that is held parallel to a constant unidirectional flow. Friction Factor is denoted by f symbol.

How to calculate Blasius Equation using this online calculator? To use this online calculator for Blasius Equation, enter Roughness Reynold Number (Re) and hit the calculate button. Here is how the Blasius Equation calculation can be explained with given input values -> 0.1777 = (0.316)/(10^(1/4)).

FAQ

What is Blasius Equation?

The Blasius Equation formula is defined as the steady two-dimensional laminar boundary layer that forms on a semi-infinite plate that is held parallel to a constant unidirectional flow and is represented as f = (0.316)/(Re^(1/4)) or Friction Factor = (0.316)/(Roughness Reynold Number^(1/4)). The Roughness Reynold Number is a dimensionless number used in fluid dynamics to characterize the influence of surface roughness on flow behavior.

How to calculate Blasius Equation?

The Blasius Equation formula is defined as the steady two-dimensional laminar boundary layer that forms on a semi-infinite plate that is held parallel to a constant unidirectional flow is calculated using Friction Factor = (0.316)/(Roughness Reynold Number^(1/4)). To calculate Blasius Equation, you need Roughness Reynold Number (Re). With our tool, you need to enter the respective value for Roughness Reynold 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 Friction Factor?

In this formula, Friction Factor uses Roughness Reynold Number. We can use 1 other way(s) to calculate the same, which is/are as follows -

Friction Factor = 0.0032+0.221/(Roughness Reynold Number^0.237)

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