4. Dimensional Analysis

Question 1

What is meant by “non dimensionalisation”

Answer 1

Reducing the number of parameters the solution set of equations depend on

Question 2

What are the dimensions of an exponential or trig function

Answer 2

Dimensionless - The result is a number
- In the function, the quantity also has to be dimensionless as well

Question 3

Describe what makes up the Reynolds number equation

Answer 3

Re = Inertial effects / Viscous effects

Question 4

What are the values of the Reynolds number in viscous and inertial limits

Answer 4

Viscous limit: Re -> 0]
Inertial limit: Re -> infinity