initial commit / add all books

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diff --git a/2063/CH7/EX7.11/7_11.sce b/2063/CH7/EX7.11/7_11.sce
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+clc

+clear

+//Input data

+d=0.12;//Diameter of the bore in m

+l=0.13;//Length of stroke in m

+N=2500;//Speed of the engine in rpm

+d1=0.06;//Diameter of the orifice in m

+Cd=0.70;//Discharge coefficient of orifice

+hw=33;//Heat causing air flow through orifice in cm of water

+p=760;//Barometric reading in mm of Hg

+T1=298;//Ambient temperature in degree K

+p1=1.013;//Pressure of air at the end of suction in bar

+T2=22;//Temperature of air at the end of suction in degree C

+R=0.287;//Universal gas constant

+n=6;//Number of cylinders in the engine

+n1=1250;//Number of strokes per minute for a four stroke engine operating at 2500 rpm

+

+//Calculations

+V=(3.14*d^2*l)/4;//Swept volume of piston in m^3

+Ao=(3.14*d1^2)/4;//Area of the orifice in m^2

+rho=p1*10^5/((R*T1)*1000);//Density of air at 1.013 bar and 22 degrees C

+Va=840*Cd*Ao*(hw/rho)^(1/2);//Volume of air passing through the orifice in m^3/min

+V1=8.734/n;//Actual volume of air per cylinder in m^3/min

+As=V1/n1;//Air supplied per cycle per cylinder in m^3

+nv=(As/V)*100;//Volumetric efficiency of the engine in percentage

+

+//Output

+printf('The volumetric efficiency of the engine is %3.2f percent',nv)