Wk 1

Question 1

Hydraulic radius eqn

Answer 1

Question 2

difference between pipes and open channels

Answer 2

Question 3

difference between steady and unsteady flow

Answer 3

Steady flow: conditions of velocity, pressure and x-section may differ from point to point but don’t change with time

unsteady: if at any point the conditions change with time.

Question 4

Depth in uniform flows?

Answer 4

Depth is constant

Question 5

Combination flows descriptions:

1) steady, uniform flow

2) Steady, non-uniform flow

3) Unsteady, uniform flow

4) Non-steady, non-uniform flow

Answer 5

Question 6

Flow classifications with Reynold’s number

Answer 6

Question 7

difference between laminar and turbulent flow

Answer 7

L - At lower velocities, the fluid particles appear to move in
straight lines although the particle velocity along each line
may not necessarily the same. The fluid may be considered
as moving in layers or laminae

T - At higher velocities, the fluid particles no longer move in
straight paths but are intertwining and crossing one another
in a disorderly manner.

Question 8

What’s the transition region?

Answer 8

Region between laminar and turbulent flow

2000 < Re > 4000

Question 9

Reynold’s number eqn

Answer 9

Question 10

Difference between tranquil and rapid flow

Answer 10

Question 11

1,2

Question 12

3,4

Question 13

5

Question 14

6