Question

Develop an equation for shear stress, of a fluid flowing through a pipe, assuming the shear stress is a function of the diameter, pipe roughness, fluid density, and dynamic viscosity

How many dimensional groups are needed

What is the best selection of repeating variables? Why?

What are the exponents associated with the repeating variables ?

What is the complete form of the pi numbers required?

solve for the final expression relating the variables in question.

One must determine experimentally any coefficients required to turn the final expression into an equation. How would you design these experiments? How many and for which variables?

Answer 1