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//Fluid system - By - Shiv Kumar
//Chapter 2 - Impact of Jet
//Example 2.19
clc
clear
//Given Data:-
d=40; //Diameter of the Jet, mm
V=24; //Velocity of the Jet, m/s
//Data Used:-
rho=1000; //Density of water, kg/m^3
//Computations:-
d=d/1000; //m
a=(%pi/4)*d^2; //cross-sectional area of Jet, m^2
//CaseI - Jet strikes normal to a fixed plate
//(a)
Fx=rho*a*V^2; //N
//(b)Work done, W
W=0; //As there is no motion of flat plate
//(c)
eta=0; //Hydraulic efficiency is zero
//Result I:-
printf("Case I: \n\t")
printf("(a)Force exerted by Jet on the Plate in direction of Jet, Fx=%.2f N \n\t", Fx) //The answer vary due to round off error
printf("(b)Work done by Jet per second=%.2f N \n\t", W) //The answer vary due to round off error
printf("(c)Hydraulic efficiency of the Jet, eta_H=%.2f percent \n\n", eta) //The answer vary due to round off error
//Case II - Jet strikes the moving plate
u=10; //Velocity of moving flat plate, m/s
//(a)
Fx=rho*a*(V-u)^2; //N
//(b)
W=Fx*u; //N-m/s
//(c)
eta=2*W/(rho*a*V^3)*100; //In percentage
//Result II
printf("Case II: \n\t")
printf("(a)Force exerted by Jet on the Plate in direction of Jet, Fx=%.2f N \n\t", Fx) //The answer vary due to round off error
printf("(b)Work done by Jet per second=%.2f N \n\t", W) //The answer vary due to round off error
printf("(c)Hydraulic efficiency of the Jet, eta_H=%.2f percent \n\n", eta) //The answer vary due to round off error
//Case III - Jet strikes a series of flat moving plate
u=10; //velocity of flat plate, m/s
//(a)
Fx=rho*a*V*(V-u); //N
//((b)
W=Fx*u; //N-m/s
//(c)
eta=W*2/(rho*a*V^3)*100; //In percentage
//Result III
printf("Case III: \n\t")
printf("(a)Force exerted by Jet on the Plate in direction of Jet, Fx=%.3f N \n\t", Fx) //The answer vary due to round off error
printf("(b)Work done by Jet per second=%.2f N \n\t", W) //The answer vary due to round off error
printf("(c)Hydraulic efficiency of the Jet, eta_H=%.2f percent \n\n", eta) //The answer vary due to round off error
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