DMT 21 - 30

Question 1

What are the two types of flow in general?

Answer 1

Laminal Flow

Turbulent Flow

Question 2

What are the factors for Laminar Flow?

1-3

Answer 2

Layers of adjacent fluid slide over each other
Streamlines are straight
Flow near wall slower than centre

Question 3

Give an example of Laminar Flow?

Answer 3

Flow of Honey

Question 4

Draw a Diagram to represent Laminar Flow?

Answer 4

_____

Question 5

What are the factors for Turbulent Flow?

1-3

Answer 5

Irregular and chaotic particle path
Large scale mixing
Flow in radial

Question 6

Give an example of Turbulent Flow?

Answer 6

Smoke billowing from chimney

Question 7

Draw a diagram to represent Turbulent flow?

Answer 7

_____

Question 8

What does the Flow Regime depend on?

Answer 8

The flow regime depends mainly on Reynolds Number

Question 9

What is Reynolds Number?

Answer 9

Reynolds Number is the ratio of the inertial forces to viscous forces in the fluid

Question 10

Write the word equation for Reynolds number?

Answer 10

𝑅𝑒= (𝐼𝑛𝑒𝑟𝑡𝑖𝑎𝑙 𝐹𝑜𝑟𝑐𝑒𝑠)/(𝑉𝑖𝑠𝑐𝑜𝑢𝑠 𝐹𝑜𝑟𝑐𝑒𝑠)