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Fluid Mechanics: Wall Shear Stress

When the velocity profile of the boundary layer is determined it is possible to determine what the wall shear stress would be. Knowing what the wall shear stress is will make it possible to determine part of the drag forces that could be acting on the submerged object. To calculate the wall shear stress, using the Blasius equation, refer to equation 1.

Wall Shear stress equation (1)

τw = Wall Shear Stress

U = Fluid Velocity

x = Length of interest from Leading Edge

ρ = Fluid Densisty

μ = Dynamic Viscosity

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