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Diffstat (limited to '1358/CH7/EX7.1/Example71.sce')
-rwxr-xr-x | 1358/CH7/EX7.1/Example71.sce | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/1358/CH7/EX7.1/Example71.sce b/1358/CH7/EX7.1/Example71.sce new file mode 100755 index 000000000..3aaddffdf --- /dev/null +++ b/1358/CH7/EX7.1/Example71.sce @@ -0,0 +1,27 @@ +// 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 7, Example 1")
+disp("From isentropic p–T relation for expansion process")
+disp("T02a/T01 = (P02/P01)^((gam-1)/gam)")
+P02 = 1.03;
+P01 = 5.2;
+T01 = 1000;
+gam = 1.33;
+T02a = T01*(P02/P01)^((gam-1)/gam)
+disp("Using isentropic efficiency of turbine")
+etat = 0.88;
+T02 = T01 - etat*(T01-T02a)//K
+disp("Using steady-flow energy equation")
+disp("1/2 * (C2^2 - C1^2) = Cp(T01 - T02)")
+Cpg = 1147;
+C1 = 140;
+C2 = (2*Cpg*(T01-T02) + C1^2)^0.5//m/s
+disp("From velocity triangle, velocity of whirl at rotor inlet in m/s")
+Cw2 = C2*sin(57*%pi/180)
+disp("Turbine work output is given by in kW")
+m = 28;
+Wt = m*Cpg*(T01-T02)/1000
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