Week 5 - Shocks Flashcards
1
Q
When do shocks arise?
A
When the velocity of an object relative to the fluid exceeds the speed of sound.
2
Q
Explain the Rankine-Hugoniot condition.
A
Divide medium into two systems. Apply continuity equation and conservation of momentum and energy
3
Q
What is an adiabatic process?
A
A process with constant heat energy
4
Q
How do the shape and amplitude of linear sound wave evolve when propagating?
A
They are constant
5
Q
What are the constant attributes of non-linear sound waves that propagate?
A
Riemann invariants
6
Q
What is the difference between a soliton and a solitary wave?
A
There is none (but they are used in slightly different areas - fluid dynamics and general physics)
7
Q
What is an oblique shock?
A
An inclined shock. It arises when a supersonic flow enounters a corner
