• Sections 10.1-10.3 of Anderson.

Problems from Anderson
10.1
10.2
10.4
10.5

Study Questions

1. Are the equations for quasi-1-D flow exact? Explain your answer.
    
2. What is the quasi-1-D form of the mass conservation relation?
    
3. For subsonic quasi-1-D flow, what will happen to the velocity if the area is reduced?
    
4. For supersonic quasi-1-D flow, what will happen to the velocity if the area is reduced?
    
5. What geometrical feature must be present in order to accelerate an initially subsonic flow to supersonic speeds in a duct with slowly varying area?
    
6. If a flow becomes supersonic in a duct with slowly-varying area, where will the sonic line be located?
    
7. What does it mean for the flow in a nozzle to be choked?
    
8. Once flow becomes supersonic in a nozzle is it possible to increase the mass flow by decreasing the pressure at the exit? Explain your answer.
    
9. What will happen if a nozzle geometry is such that the pressure predicted at the exit for supersonic isentropic flow is higher than the actual pressure at the exit?
    
10. What will happen if a nozzle geometry is such that the pressure predicted at the exit for supersonic isentropic flow is lower than the actual pressure at the exit?
     
11. What is an underexpanded nozzle exit condition? What flow structure will develop downstream of the nozzle?
     
12. what is an overexpanded nozzle exit condition? What flow structure will develop downstream of the nozzle?