Basic Aerodynamics Flashcards
1
Q
What is the stream tube?
A
The area outlined by the streamlines intersecting the circumference of a disk perpendicular to the directional flow.
2
Q
How does a mass react flowing through a stream tube?
A
It is confined by that stream tube.
3
Q
What is the mass flow?
A
The mass crossing A per unit of time.
4
Q
What is the assumption of density and velocity in a stream tube?
A
They are mean numbers for the entire stream.
5
Q
What is a compressible Flow?
A
Density of the fluid can be changed from point to point
6
Q
What is an incompressible Flow?
A
Density of the elements remain the same. Usually considered a myth
7
Q
What is a convergent duct?
A
Entrance area is greater than exit area, leading to higher velocities.
