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//Fluid system - By - Shiv Kumar
//Chapter 2 - Impact of Jet
//Example 2.24
clc
clear
//Given Data:-
Do=1.5; //Diameter of rotor at inlet of vane, m
Di=1; //Diameter of rotor at outlet of vane, m
N=400; //Speed of the rotor, rpm
Vi=15; //m/s
alpha_i=12; //Nozzle angle at inlet, degrees
Vo=5; //m/s
VFo=Vo;
//Data Used:-
g=9.81; //Acceleration due to gravity, m/s^2
//Computations:-
ui=%pi*Do*N/60; //m/s
uo=%pi*Di*N/60; //m/s
Vfi=Vi*sind(alpha_i); //m/s
Vfo=Vo; //m/s
Vwi=Vi*cosd(alpha_i); //m/s
//(a)
Vrwi=ui-Vwi; //m/s
beta_i=180-atand(Vfi/Vrwi); //Blade angle at inlet, degrees
beta_o=atand(Vfo/uo); //Blade angle at outlet, degrees
//(b)
Vro=uo/cosd(beta_o); //m/s
//(c)
W=Vwi*ui/g; //N-m/N
//Results:-
printf("(a)Blade angle at entry and exit are: \n\t")
printf("beta_i=%.2f degrees \t beta_o=%.2f degrees \n\n", beta_i,beta_o) //The answer vary due to round off error
printf("(b)Velocity of water relative to Vanes at exit, Vro=%.2f m/s \n", Vro) //The answer vary due to round off error
printf("(c)Work done per second per unit weight of water strikes on Vane per second=%.2f N-m/N", W) //The answer vary due to round off error
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