Friction Velocity for Airfoil Calculator

✖Wall Shear Stress for Airfoil is the shear stress in the layer of fluid next to the wall of an airfoil.ⓘ Wall Shear Stress for Airfoil [T_w]			+10% -10%
✖Density of Air is the mass of air per unit volume; it decreases with altitude due to lower pressure.ⓘ Density of Air [ρ]			+10% -10%

✖The Friction Velocity for Airfoil characterizes the shear at the boundary.ⓘ Friction Velocity for Airfoil [U_f]

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Formula

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Friction Velocity for Airfoil

Formula

`"U"_{"f"} = ("T"_{"w"}/"ρ")^0.5`

Example

`"3.4m/s"=("14.94708N/m²"/"1.293kg/m³")^0.5`

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Friction Velocity for Airfoil Solution

STEP 0: Pre-Calculation Summary

Formula Used

Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5
U_f = (T_w/ρ)^0.5
This formula uses 3 Variables

Variables Used

Friction Velocity for Airfoil - (Measured in Meter per Second) - The Friction Velocity for Airfoil characterizes the shear at the boundary.
Wall Shear Stress for Airfoil - (Measured in Pascal) - Wall Shear Stress for Airfoil is the shear stress in the layer of fluid next to the wall of an airfoil.
Density of Air - (Measured in Kilogram per Cubic Meter) - Density of Air is the mass of air per unit volume; it decreases with altitude due to lower pressure.

STEP 1: Convert Input(s) to Base Unit

Wall Shear Stress for Airfoil: 14.94708 Newton per Square Meter --> 14.94708 Pascal (Check conversion here)
Density of Air: 1.293 Kilogram per Cubic Meter --> 1.293 Kilogram per Cubic Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

U_f = (T_w/ρ)^0.5 --> (14.94708/1.293)^0.5

Evaluating ... ...

U_f = 3.4

STEP 3: Convert Result to Output's Unit

3.4 Meter per Second --> No Conversion Required

FINAL ANSWER

3.4 Meter per Second <-- Friction Velocity for Airfoil

(Calculation completed in 00.022 seconds)

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Credits

Created by Vishal Anand

Indian Institute of Technology Kharagpur (IIT KGP), Kharagpur

Vishal Anand has created this Calculator and 7 more calculators!

Verified by Ojas Kulkarni

Sardar Patel College of Engineering (SPCE), Mumbai

Ojas Kulkarni has verified this Calculator and 8 more calculators!

< 7 Computational Fluid Dyanmics Calculators

Drag on Airfoil

Go Drag on Airfoil = Normal Force on Airfoil*sin(Angle of Attack of Airfoil)+Axial Force on Airfoil*cos(Angle of Attack of Airfoil)

Lift on Airfoil

Go Lift on Airfoil = Normal Force on Airfoil*cos(Angle of Attack of Airfoil)-Axial Force on Airfoil*sin(Angle of Attack of Airfoil)

Reynolds Number for Airfoil

Go Reynolds Number = (Density of Fluid*Flow Velocity*Chord Length of Airfoil)/Dynamic Viscosity

Wall Shear Stress for Airfoil

Go Wall Shear Stress for Airfoil = 0.5*Skin Friction Coefficient*Flow Velocity^2*Density of Air

Y Plus

Go Y Plus = (First Layer Height*Friction Velocity for Airfoil)/Kinematic Viscosity

Friction Velocity for Airfoil

Go Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5

Skin Friction Coefficient

Go Skin Friction Coefficient = (2*log10(Reynolds Number)-0.65)^(-2.30)

Friction Velocity for Airfoil Formula

Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5
U_f = (T_w/ρ)^0.5

Why friction velocity is useful?

Shear velocity, also called friction velocity, is a form by which a shear stress may be re-written in units of velocity. It is useful as a method in fluid mechanics to compare true velocities, such as the velocity of a flow in a stream, to a velocity that relates shear between layers of flow. Shear velocity is used to describe shear-related motion in moving fluids. It is used to describe: Diffusion and dispersion of particles, tracers, and contaminants in fluid flows. The velocity profile near the boundary of a flow (see Law of the wall).Transport of sediment in a channel.

How to Calculate Friction Velocity for Airfoil?

Friction Velocity for Airfoil calculator uses Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5 to calculate the Friction Velocity for Airfoil, the friction velocity for airfoil characterizes the shear at the boundary. Friction Velocity for Airfoil is denoted by U_f symbol.

How to calculate Friction Velocity for Airfoil using this online calculator? To use this online calculator for Friction Velocity for Airfoil, enter Wall Shear Stress for Airfoil (T_w) & Density of Air (ρ) and hit the calculate button. Here is how the Friction Velocity for Airfoil calculation can be explained with given input values -> 3.4 = (14.94708/1.293)^0.5.

FAQ

What is Friction Velocity for Airfoil?

the friction velocity for airfoil characterizes the shear at the boundary and is represented as U_f = (T_w/ρ)^0.5 or Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5. Wall Shear Stress for Airfoil is the shear stress in the layer of fluid next to the wall of an airfoil & Density of Air is the mass of air per unit volume; it decreases with altitude due to lower pressure.

How to calculate Friction Velocity for Airfoil?

the friction velocity for airfoil characterizes the shear at the boundary is calculated using Friction Velocity for Airfoil = (Wall Shear Stress for Airfoil/Density of Air)^0.5. To calculate Friction Velocity for Airfoil, you need Wall Shear Stress for Airfoil (T_w) & Density of Air (ρ). With our tool, you need to enter the respective value for Wall Shear Stress for Airfoil & Density of Air 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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