Impact of jet on a fixed curved plate

fluid power engineering
prepared by;
pavan narkhede 130120119111

1. Gandhinagar Institute of Technology Subject :- Fluid Power Engineering MECHANICAL ENGINEERING 5 th - B : 2 Impact of jet on curved plate Prepared By – Pavan Narkhede [130120119111] Guided By : Prof. Parth Panchal

2. Impact of liquid jet on a fixed curved plate When the jet strikes at the centre of the symmetrical blade

3. The plate is smooth and there is no loss of energy due to impact of jet. Force exerted by jet in the direction of jet, Force exerted by jet on curved fixed plate in vertical direction,

4. When jet strikes tangentially at one end of symmetrical plate

5. Consider a water jet striking on symmetrical curved plate tangentially at one end as shown in figure.

6. When jet strikes tangentially at one end of unsymmetrical plate

7. Impact of liquid jet on a moving curved plate When jet strikes at the centre and plate moving in the direction of jet.

8. The relative velocity between jet and plate = V – u . Force exerted by water jet on moving curved plate Work done by the jet on the plate/second

9. Impact of jet on a moving curved plate When jet strikes tangentially at one of the tips

10. Force exerted by the jet in the direction of motion Work done per unit weight of fluid striking per second

11. Power developed, P=work done in J/s Blade efficiency or jet efficiency Angle of Deflection

12. The effect of angle of plat on force Water leaves the nozzle at a velocity with force until it hits the plate, for a flat plate the force generated is minimum return but maximum force moving that plate where it has minimal deflection. As the plate curvature increases the resultant deflection is smoother and less ‘beating’ of the plate, hence the force returning increases. The angle increase will improve force. Newton’s 3rd law explains for every action there is a equal and opposite reaction and this is proved by the results table where the increase in force arrow increase’s with the plate’s angle. Please refer to diagram below to aid my best attempt of an explanation:

13. It is clear the hemisphere is more suitable, followed by the curved plated followed by the flat plate. By the statements above the oblique plate would have been more efficient than the flat plate and less efficient than the curved with it’s deflection angle at 60 degrees.

14. Experiment of impact of jet on curve plate

15. THANK YOU….