Wall shear stress Solution

STEP 0: Pre-Calculation Summary
Formula Used
Wall Shear Stress = (Local Friction Coefficient*Density*(Free Stream Velocity^2))/2
τw = (Cfx*ρ*(u^2))/2
This formula uses 4 Variables
Variables Used
Wall Shear Stress - (Measured in Pascal) - Wall shear stress is defined as the shear stress in the layer of fluid next to the wall of a pipe.
Local Friction Coefficient - Local Friction Coefficient for the flow in ducts is the ratio of wall shearing stress and dynamic head of the stream.
Density - (Measured in Kilogram per Cubic Meter) - The Density of a material shows the denseness of that material in a specific given area. This is taken as mass per unit volume of a given object.
Free Stream Velocity - (Measured in Meter per Second) - Free Stream Velocity is defined as at some distance above the boundary the velocity reaches a constant value that is free stream velocity.
STEP 1: Convert Input(s) to Base Unit
Local Friction Coefficient: 0.328 --> No Conversion Required
Density: 997 Kilogram per Cubic Meter --> 997 Kilogram per Cubic Meter No Conversion Required
Free Stream Velocity: 70 Meter per Second --> 70 Meter per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
τw = (Cfx*ρ*(u^2))/2 --> (0.328*997*(70^2))/2
Evaluating ... ...
τw = 801189.2
STEP 3: Convert Result to Output's Unit
801189.2 Pascal --> No Conversion Required
FINAL ANSWER
801189.2 Pascal <-- Wall Shear Stress
(Calculation completed in 00.020 seconds)

Credits

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Created by Nishan Poojary
Shri Madhwa Vadiraja Institute of Technology and Management (SMVITM), Udupi
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National Institute Of Technology (NIT), Hamirpur
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Wall shear stress Formula

​LaTeX ​Go
Wall Shear Stress = (Local Friction Coefficient*Density*(Free Stream Velocity^2))/2
τw = (Cfx*ρ*(u^2))/2

What is external flow?

In fluid mechanics, external flow is such a flow that boundary layers develop freely, without constraints imposed by adjacent surfaces. Accordingly, there will always exist a region of the flow outside the boundary layer in which velocity, temperature, and/or concentration gradients are negligible. It can be defined as the flow of a fluid around a body that is completely submerged in it.
An example includes fluid motion over a flat plate (inclined or parallel to the free stream velocity) and flow over curved surfaces such as a sphere, cylinder, airfoil, or turbine blade, air flowing around an airplane and water flowing around the submarines.

How to Calculate Wall shear stress?

Wall shear stress calculator uses Wall Shear Stress = (Local Friction Coefficient*Density*(Free Stream Velocity^2))/2 to calculate the Wall Shear Stress, Wall shear stress formula is defined as a measure of the frictional force per unit area exerted by a fluid flowing along a solid surface, typically used to analyze the flow behavior over a flat plate, and is an important parameter in understanding the flow dynamics and its effects on the surface. Wall Shear Stress is denoted by τw symbol.

How to calculate Wall shear stress using this online calculator? To use this online calculator for Wall shear stress, enter Local Friction Coefficient (Cfx), Density (ρ) & Free Stream Velocity (u) and hit the calculate button. Here is how the Wall shear stress calculation can be explained with given input values -> 801189.2 = (0.328*997*(70^2))/2.

FAQ

What is Wall shear stress?
Wall shear stress formula is defined as a measure of the frictional force per unit area exerted by a fluid flowing along a solid surface, typically used to analyze the flow behavior over a flat plate, and is an important parameter in understanding the flow dynamics and its effects on the surface and is represented as τw = (Cfx*ρ*(u^2))/2 or Wall Shear Stress = (Local Friction Coefficient*Density*(Free Stream Velocity^2))/2. Local Friction Coefficient for the flow in ducts is the ratio of wall shearing stress and dynamic head of the stream, The Density of a material shows the denseness of that material in a specific given area. This is taken as mass per unit volume of a given object & Free Stream Velocity is defined as at some distance above the boundary the velocity reaches a constant value that is free stream velocity.
How to calculate Wall shear stress?
Wall shear stress formula is defined as a measure of the frictional force per unit area exerted by a fluid flowing along a solid surface, typically used to analyze the flow behavior over a flat plate, and is an important parameter in understanding the flow dynamics and its effects on the surface is calculated using Wall Shear Stress = (Local Friction Coefficient*Density*(Free Stream Velocity^2))/2. To calculate Wall shear stress, you need Local Friction Coefficient (Cfx), Density (ρ) & Free Stream Velocity (u). With our tool, you need to enter the respective value for Local Friction Coefficient, Density & Free Stream Velocity and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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