From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1358/CH3/EX3.19/Example319.sce | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100755 1358/CH3/EX3.19/Example319.sce (limited to '1358/CH3/EX3.19') diff --git a/1358/CH3/EX3.19/Example319.sce b/1358/CH3/EX3.19/Example319.sce new file mode 100755 index 000000000..ba64bcfa7 --- /dev/null +++ b/1358/CH3/EX3.19/Example319.sce @@ -0,0 +1,33 @@ +// 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 19") +disp("Hydraulic efficiency is") +disp("etah = Power deleloped/Power available") +disp(" =m(Cw1U1 - Cw2U)/rhogQH") +disp("Since flow is radial at outlet, then Cw2 = 0 and m = rhoQ, therefore") +disp("etah = Cw1U1/gH") +g = 9.81; +H= 5; +U1 = 9.6; +etah = 80;//% +Cw1 = etah *g*H/(9.6*100) +disp("Radial velocity Cr1 = 4m/s") +Cr1 = 4; +disp("tan(alpha1) = Cr1/Cw1 (from velocity triangle)") +alpha1 = atan(Cr1/Cw1)*180/%pi +disp("i.e., inlet guide vane angle alpha1 = 44.38") +disp("tan(beta1) = Cr1/(Cw1 - U1 )") +beta1 = 180+atan(Cr1/(Cw1-U1))*180/%pi +disp("Runner speed is") +N = 230; +D1 = 60*U1/(%pi*N) +disp("Overall efficiency") +disp("etao = Power output/Power available") +rho = 1000; +Q = 130*1000/(0.72*rho*g*H) +disp("But Q = pi*D1h1Cr1 (where h1 is the height of runner)") +h1 = Q/(%pi*D1*Cr1) -- cgit