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Aerodynamics Practice Test: Crocco's Theorem
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Avg score: 60% Most missed: “Which of these is Crocco’s theorem?”

Crocco's theorem is an aerodynamic theorem that relates the flow velocity, vorticity, and stagnation pressure of a potential flow. It also relates the thermodynamics and fluid kinematics. 

Crocco's theorem also relates the gradients of total enthalpy, gradients of entropy, and flow rotation. When a steady flow field has gradients of total enthalpy and/or entropy, Crocco's theorem shows that it is rotational. 
Crocco's theorem implies that the gradient of entropy contributes to the induction of circulation, and in consequence to the induction of lift. 
 

Aerodynamics Practice Test: Crocco's Theorem
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7 Questions

1. How is the vorticity related to the angular velocity?
2. According to Crocco’s theorem, the vorticity behind the curved shockwave is zero.
3. What does the curl of velocity field give us?
4. Which of these is Crocco’s theorem?
5. Crocco’s theorem gives a relation between which of the following?
6. What does Crocco’s theorem establish?
7. Flow passing through curved shock creates vorticity in the downstream.