//Fluid system - By - Shiv Kumar //Chapter 2 - Impact of Jet //Example 2.15 clc clear //Given Data:- Vi=20; //Absolute velocity of Jet at Inlet of Vane, m/s u=10; //Velocity of Vane, m/s ui=u; uo=u; alpha_i=20; //Angle made by Jet at Inlet, degrees alpha_l=130; //Angle made by Jet at leaving, degrees alpha_o=180-alpha_l; //degrees //Data Used:- g=9.81; //Acceleration due to gravity, m/s^2 //Computations:- //(a) Vwi=Vi*cosd(alpha_i); //m/s Vfi=Vi*sind(alpha_i); //m/s Vrwi=Vwi-ui; //m/s beta_i=atand(Vfi/Vrwi); //degrees Vri=Vfi/sind(beta_i); //m/s Vro=Vri; beta_o=alpha_o-asind(uo*sind(180-alpha_o)/Vro); //degrees Vwo=Vro*cosd(beta_o)-uo; //degrees //(b) W=(Vwi+Vwo)*u/g; //N-m/N //Results:- printf("(a)Vane angle at Inlet, beta_i=%.2f degrees \n", beta_i) printf(" Vane angle at Outlet, beta_o=%.2f degrees \n\n", beta_o) //The answer vary due to round off error printf("(b)Work done per second per unit weight of water striking the vane per second=%.2f N-m/N", W) //The answer vary due to round off error