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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 /3407/CH8/EX8.1 | |
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initial commit / add all books
Diffstat (limited to '3407/CH8/EX8.1')
| -rw-r--r-- | 3407/CH8/EX8.1/Ex8_1.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/3407/CH8/EX8.1/Ex8_1.sce b/3407/CH8/EX8.1/Ex8_1.sce new file mode 100644 index 000000000..d7262a175 --- /dev/null +++ b/3407/CH8/EX8.1/Ex8_1.sce @@ -0,0 +1,26 @@ +clear;
+clc;
+funcprot(0);
+
+//given data
+D2 = 23.76;//diameter of rotor in cm
+N = 38140;//rotational speed in rev/min
+alpha2 = 72;//absolute flow angle in deg
+d = 0.5*D2;//rotor mean exit diameter
+
+//Calcultaions
+U2 = %pi*N*D2/(100*60);
+w2 = U2/tan(alpha2*%pi/180);
+c2 = U2*sin(alpha2*%pi/180);
+w3 = 2*w2;
+U3 = 0.5*U2;
+c3 = sqrt(w3^2 - U3^2);
+delW = 0.5*((U2^2 - U3^2)+(w3^2 - w2^2)+(c2^2 - c3^2));
+inp_U2 = 0.5*(U2^2 - U3^2)/delW;
+inp_w2 = 0.5*(w3^2 - w2^2)/delW;
+inp_c2 = 0.5*(c2^2 - c3^2)/delW;
+
+//Results
+printf('The fractional inputs from the three terms are, for the U^2 terms, %.3f; \n for the w^2 terms, %.3f; for the c^2 terms, %.3f.',inp_U2,inp_w2,inp_c2);
+
+//there are errors in the answers given in textbook
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