initial commit / add all books

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diff --git a/1955/CH5/EX5.9/example9.sce b/1955/CH5/EX5.9/example9.sce
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+clc

+clear

+//input data

+U=300//Blade speed of turbine in m/s

+m=2.5//Mass flow rate in kg/s

+T0=773//Gas temperature at turbine inlet in K

+T2=573//Gaas temperature at turbine outlet in K

+a1=70//Fixed blade outlet angle in degree

+Ca=200//Axial velocity in m/s

+Cp=1.005//Specific heat of gas at constant pressure in kJ/kg.K

+//calculations

+W=m*Cp*(T0-T2)//Power developed by turbine in kW

+Wm=Cp*(T0-T2)//Stage work done per unit mass flow rate in kJ/kg

+Wx1Wx2=Wm*10^3/U//Sum of whirl components of velocity at inlet and outlet in m/s

+Wx1=(Ca*tand(a1))-U//Inlet whirl velocity in m/s

+Wx2=Wx1Wx2-Wx1//Outlet whirl velocity in m/s

+R=(Wx2-Wx1)/(2*U)//Degree of reaction

+Wx2Wx1=Wm*10^3*R//Energy input due to whirl component velocity in (m/s)^2

+C1=Ca/cosd(a1)//Velocity of steam at exit from nozzle in m/s 

+nb=(Wm*10^3)/(((C1^2)/2)+Wx2Wx1)//Blade efficiency

+

+//output

+printf('(a)Power developed by turbine is %3.1f kW\n(b)Degree of reaction is %3.3f\n(c)Blade efficiency is %3.4f\n',W,R,nb)