Impact of Water Jets

What is the impact of jets of water in hydraulic machines and fluid dynamics? What force does a water jet imposes on different surfaces like plane surface, curved surface and moving curved vanes etc.

The following relations are important :

(a) Force exerted by a jet of water impinging normally on a fixed plate,

(b) Force exerted by a jet of water impinging normally (i.e. perpendicular) on a fixed plate inclined at an angle 0 (as shown in Fig. 4.1) is

Force exerted by the jet in the direction of flow,

and force exerted by the jet in a direction normal to flow,

(c) When a jet of water enters and leaves the curved fixed plate or vane tangentially, then the force of the jet along normal to the plate

(d) Force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is

(e) When a jet of water enters and leaves a moving curved vane, then the force of jet in the direction of motion of the vane is

1. Congratulations!Infact,mechanical engineering has become very friendly and comprehensible to me now.

Are Engineers Favourite Among Girls?

What do girls think about men who are engineers and what type of engineers are most favourite among girls? A survey was conducted by a team of aboutmech with members chosen from different countries. Each team member carried out a neutral survey in his/ her country to evaluate what females think about most of the engineers from different engineering branches. An overview of different questions asked in survey is given below: Question: Which male engineers do you find more attractive as a husband? Almost 50% women voted for mechanical engineers to be the most attractive husbands among other engineers. So mechanical engineers are most favourite among girls as a husband. They find them more trustworthy, intelligent, and creative. A married women from California said, “If your husband is a mechanical engineer, he will help you in everyday tasks. Because mechanical engineers are good team players and they have creative ideas about everything.” Which male engineers do you find more