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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
+
+