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4 cards from this section. Quick, good the night before a test.
What is shear stress?
Think about the forces acting along plane surfaces.
Define eddy viscosity.
It relates to turbulent characteristics of the fluid.
Which of the following best describes shear stress in turbulent flow?
Think of the definitions you've learned about flow types.
Eddy viscosity is a fluid property.
Consider what makes different viscosities function differently.
A fluid with a dynamic viscosity of 0.001 Pascal seconds flows through a pipe. If the average velocity is 3 m/s and the distance from the wall is 0.1 m, compute the approximate turbulent shear stress if the mixing length is estimated at 0.4y.
You'll need to establish the gradient from the known velocity and distance.
Design a study method to determine how changes in turbulence affect shear stress in an engineered hydraulic system. Explain the steps involved.
Think about variables that can be controlled in your design.
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