Question

Impact force of a water jet

The objective of the lab is to determine if measured and theoretical forces are equal to each other (with in their respective uncertainties of each other) for a vane with a nominal turning angle of 120 degrees.

I need help setting up a figure, and finding published values for this experiment

Answer 1

Sol" :- It is given that the nominal turning angle is 120. assumption: » Let us consider the velocity of jet is ve before impact to the vane. and u, is the velocity of vane. V₂ , 12 ilfa are the absolute velocity relative velocity and flow velocity at outlet. Vw, and we are the where component · of absolutt velocity. » Let us consider the inlet jet and vane are in the same direction. - HU2*w = Set up figure EAST 180-6 - -- D 3 Uone -A Ac -- - a Vi=twi - You can also conpider the general cape E 3424

2- Angle between the direction of the jet and direction of motion of the plavane. o= vane angle at inlet Be angle made by velocity V₂ withet the direction 1 Beby velocity V₂ with of motion of vane at outlet & vane angle atoutlet for the sol" You can take the Vi= 15mis S and u =5m/s Vane velocity If the vane in gymmetrical, then (8=d) since 120º = 180-6+0) O== 30 let 4,=42=5m/s using sine rule in DA CB AB = AC or vi = when sin 80-0) singo-) Sin180-30) SinBorches 15 5 Singo' singo- R = 20.4047 Also from DACB Vi Vry Sino- sinzo 4040 'Vri =10.46 mis = Von from velouty triangle SHEG Very coso = Uz + Vw2,10.46699 30=5+Yw, Vwz = 4.06 mis Varg sind = Vtz or 42 = 10.46 Singo = 5.23 mis V₂ J Vf 24 Vwq2 = √5.23² 4.062 tant pel PSOE = 1.288 = 6.62mis

= 52.170 work done per unit weight of the water strikingling= 1 witwa] xu sincefil, = 42 - |x|V CoA +++o6]xs . = 5 [ls Co$20.4099 +4.06]=9.225 Wide I W = 9.225Nm/s
The values of velocities are taken arbitrary.you can change them.