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:

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

8. Match the following:

- Vorticity-streamfunction equation are ____ in nature.

**Answers:**

**False**
**False**
**True**
**a-3, b-4, c-1, d-2**
**Divergence**
**Eulerian and Lagrangian.**
**No**
**a-3,b-4,c-1,d-2**
**Parabolic**

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