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authorprashantsinalkar2017-10-10 12:27:19 +0530
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+//Fluid Systems - By - Shiv Kumar
+//Chapter 4 - Pelton Turbine (Impulse Turbine)
+//Example 4.20
+
+ clc
+ clear
+
+//Given Data:-
+ D=1.6; //Mean Diameter of Bucket Circle, m
+ P=3200; //Power Developed, kW
+ n=2; //Number of Wheels
+ H=300; //Effective Head, m
+ N=410; //Speed, rpm
+ eta_o=0.89; //Overall Efficiency
+ Cv=0.98; //Co-efficient of Velocity
+
+
+//Data Used:-
+ rho=1000; //Density of water, kg/m^3
+ g=9.81; //Acceleration due to gravity, m/s^2
+
+//Computations:-
+ Q=P*1000/(rho*g*H*eta_o); //Discharge, m^3/s
+
+ //(a)Diameter of the Nozzle, d
+ Vi=Cv*sqrt(2*g*H); //m/s
+ d=sqrt(Q/((%pi/4)*Vi))*1000; //mm
+
+ //(b)Speed Ratio, Ku
+ u=%pi*D*N/60; //m/s
+ Ku=u/sqrt(2*g*H);
+
+ //(c)Specific Speed, Ns
+ Ns=N*sqrt(P/n)/(H^(5/4)); // In SI Units
+
+
+//Results:-
+ printf(" (a)Diameter of the Nozzle, d=%.2f mm\n",d) //The answer vary due to round off error
+ printf(" (b)Speed Ratio, Ku =%.3f \n",Ku) //The answer vary due to round off error
+ printf(" (c)Specific Speed, Ns =%.f (SI Units)\n",Ns)
+
+