The equation “ρ x A x V = constant” is known as:
Where:
ρ: density
A: cross-sectional area of the flow
V: velocity
Refer to figure.
If a system is in a condition of steady flow, where the flow rate is the same at every point through the system, it is possible to write what is known as Equation of continuity.
Imagine air flowing through a narrowing tube. To get the same mass flow rate through the thinner section of the tube, the velocity must have increased.
Mass flow depends on the velocity of the air (V), the density of the air (ρ) and the cross-sectional area of the tube (A). Thus:
- A V ρ = Mass Flow = A constant value
Your Notes (not visible to others)
This question has appeared on the real examination, you can find the related countries below.
Use Keyboard Shortcuts
Use your keyboard for faster navigation
