initial commit / add all books

1 files changed, 29 insertions, 0 deletions

diff --git a/3407/CH9/EX9.2/Ex9_2.sce b/3407/CH9/EX9.2/Ex9_2.sce
new file mode 100644
index 000000000..ad2a57cc7
--- /dev/null
+++ b/3407/CH9/EX9.2/Ex9_2.sce
@@ -0,0 +1,29 @@
+clear;
+clc;
+funcprot(0);
+
+//given data
+P = 4.0;//in MW
+N = 375;//in rev/min
+H_eps = 200;//in m
+KN = 0.98;//nozzle velocity coefficient
+d = 1.5;//in m
+k = 0.15;//decrease in relative flow velocity across the buckets
+alpha = 165;//in deg
+g = 9.81;//in m/s^2
+rho = 1000;//in kg/m^3
+
+//Calculations
+U = N*%pi*d*0.5/30;
+c1 = KN*sqrt(2*g*H_eps);
+nu = U/c1;
+eff = 2*nu*(1-nu)*(1-(1-k)*cos(alpha*%pi/180));
+Q = (P*10^6 /eff)/(rho*g*H_eps);
+Aj = Q/(2*c1);
+dj = sqrt(4*Aj/%pi);
+omega_sp = (N*%pi/30)*sqrt((P*10^6)/rho)/((g*H_eps)^(5/4));
+
+//Results
+printf('(i)The runner efficiency = %.4f',eff);
+printf('\n (ii)The diameter of each jet = %.4f m',dj);
+printf('\n (iii)The power specific speed = %.3f rad',omega_sp);