Aerodynamics QnA

1. Stream-function vorticity formulation removes higher-order terms from Navier-Stokes equations ?

2.Stream-function vorticity formulation can be used for simulating a 3-dimensional flow.

3. If dye is injected into a liquid at a fixed point in the flow field, then at a later time t, the dye will indicate the end points of the path lines of particles which have passed through the injection point.

4. Match the following:

  1. If the flow is incompressible, then the ___ of velocity is zero.
  2. Timelines and Pathlines corresponds to _______ and _____ formulations.
  3. Streamlines can be visualized where flow is Unsteady.

8. Match the following:

  1. Vorticity-streamfunction equation are ____ in nature.

 

 

 

 

Answers:

  1. False
  2. False
  3. True
  4. a-3, b-4, c-1, d-2
  5. Divergence
  6. Eulerian and Lagrangian.
  7. No
  8. a-3,b-4,c-1,d-2
  9. Parabolic

 

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