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diff --git a/3751/CH12/EX12.11/Ex12_11.sce b/3751/CH12/EX12.11/Ex12_11.sce new file mode 100644 index 000000000..f8c6af6ce --- /dev/null +++ b/3751/CH12/EX12.11/Ex12_11.sce @@ -0,0 +1,43 @@ +//Fluid Systems - By - Shiv Kumar +//Chapter 12- Reciprocating Pumps +//Example 12.11 +//(a)Theoritical Question. +//(b)Theoritical Question. +//(c)To Find the Rate of flow into or from the air vessel when crank makes angle of 30, 90 and 120 degrees with inner dead centre and + //Also Determine crank angle at which there is no flow to or from the air vessel. + + clc + clear + +//Given Data:- + D=200; //Bore of the Pump, mm + L=350; //Stroke Length, mm + d_s=150; //Diameter of Suction Pipe, mm + N=120; //Speed of the Pump, rpm + + +//Computations:- + d_s=d_s/1000; //m + D=D/1000; //m + L=L/1000; //m + + A=(%pi/4)*D^2; //m^2 + omega=2*%pi*N/60; //rad/s + r=L/2; //m + + //Using the Equation 12.28 from the textbook, Rates of Flow are + Q_30=A*omega*r*(2/%pi-sind(30) )*1000; //For 30 degree angle, litres/s + Q_90=A*omega*r*(2/%pi-sind(90) )*1000; //For 90 degree angle, litres/s + Q_120=A*omega*r*(2/%pi-sind(120) )*1000; //For 120 degree angle, litres/s + + theta=asind(2/%pi); //Angle at which there is no flow, degrees + //This is NOT Calculated in the Textbook. + +//Results:- + printf("Rate of Flow from the Air Vessel=%.1f litre/s for 30 Degree Angle\n\t\t\t\t",Q_30) + printf(" =%.f litre/s for 90 Degree Angle\n\t\t\t\t",Q_90) + printf(" =%.1f litre/s for 120 Degree Angle\n",Q_120) + + printf("The angle at which there is no flow from or to the air vessel = %.2f Degrees\n",theta) + + |