Streamlines and streamtubes

1. STEAMLINES AND STREAMTUBES PRESENTED BY: MANOJKUMAR S

2. Streamlines  are a family of curves  that are instantaneously   tangent  to the  velocityy  vector of the flow. These show the direction a massless fluid element will travel in at any point in time .

3. Air Resistance Vehicles experience air resistance as they move - caused by the frictional forces of the air against the vehicle. The faster the vehicle moves, the bigger the air resistance becomes (top speed is reached when the force from the engine is balanced by air resistance) Reduce the air resistance and you will go faster - streamlining allows the air to flow over more easily so air resistance is reduced

4. Resistance caused by fluid for various shapes

5. If we pull out a bundle of streamlines from inside of a general flow for analysis. Such a bundle is called  stream tube  and is very useful in analysing flows.

6. Applications of streamlining and streamtubes