What is **nonuniform flow**?
A
Flow where velocity is constant at all points
B
Flow where pressure is uniform
C
Flow where velocity changes from point to point
D
Flow in a circular pipe
Analysis & Theory
Nonuniform flow means the velocity is not the same at all locations in the flow field.
Which of the following is an example of **nonuniform flow**?
A
Water flowing through a pipe of constant diameter
B
Air flowing steadily through a converging nozzle
C
River flowing at a constant width and depth
D
Fluid in a tank at rest
Analysis & Theory
In a converging nozzle, the velocity changes along the flow direction—this is nonuniform flow.
Nonuniform flow can be:
C
Both steady and unsteady
D
Neither steady nor unsteady
Analysis & Theory
Nonuniform flow can be either steady (velocity changes with position, not time) or unsteady (velocity changes with time and position).
In a **diverging pipe**, water flow is an example of:
Analysis & Theory
The flow is steady (unchanging with time), but nonuniform (velocity changes with position).
Which flow condition indicates **uniform flow**?
A
Velocity is constant along the flow direction
B
Velocity changes from point to point
C
Density changes over time
Analysis & Theory
Uniform flow means the velocity is constant at every point along the flow direction.
In nonuniform flow, how does pressure vary?
C
It may vary along the flow direction
D
It is independent of velocity
Analysis & Theory
In nonuniform flow, pressure may change due to changes in velocity and cross-section.
Which term correctly describes flow where velocity changes with both time and position?
Analysis & Theory
Unsteady nonuniform flow varies with both time and location.
Which flow type is **most idealized** and rarely occurs in real systems?
Analysis & Theory
Uniform flow is an idealization. Most real flows are nonuniform due to friction and geometry changes.
Which of the following causes **nonuniformity** in flow?
A
Change in pipe diameter
Analysis & Theory
Geometry changes, friction, and disturbances cause nonuniform flow.
In open channel flow, a change in **depth** indicates:
Analysis & Theory
If depth changes along the channel, the flow is nonuniform.