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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /1358/CH3/EX3.10/Example310.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '1358/CH3/EX3.10/Example310.sce')
| -rwxr-xr-x | 1358/CH3/EX3.10/Example310.sce | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/1358/CH3/EX3.10/Example310.sce b/1358/CH3/EX3.10/Example310.sce new file mode 100755 index 000000000..0517be062 --- /dev/null +++ b/1358/CH3/EX3.10/Example310.sce @@ -0,0 +1,31 @@ +// Display mode
+mode(0);
+// Display warning for floating point exception
+ieee(1);
+clear;
+clc;
+disp("Turbomachinery Design and Theory,Rama S. R. Gorla and Aijaz A. Khan, Chapter 3, Example 10")
+disp("Refering Figures")
+disp("Since this is an impulse turbine, assume coefficient of velocity = 0.98")
+disp("Therefore the absolute velocity at inlet is")
+Cv = 0.98;
+g = 9.81;
+H = 35;
+C1 = Cv*(2*g*H)^0.5
+disp("The velocity of whirl at inlet")
+alpha1 = 30;
+Cw1 = C1*cos(alpha1*%pi/180)
+disp("Since U1 = U2 = U")
+disp("Using outlet velocity triangle")
+disp("C2 = U2tan(beta2) = U tan(beta2) = U tan(22)")
+disp("Hydraulic efficiency of turbine (neglecting losses)")
+//etah = Cw1U1/gH = (H - C2^2/2g)/H
+//22.24U + 0.082U^2 - 9.81H = 0
+disp("As U is positive,")
+U = (-22.24 + ((22.4)^2 + 4*0.082*g*H)^0.5)/(2*0.082) - 0.9
+disp("Now using relation")
+disp("U = %pi*D*N/60")
+D = 1.5;
+N = 60*U/(%pi*D)
+disp("Hydraulic efficiency")
+etah = Cw1*U/(g*H)
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