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+clear;

+clc;

+printf("\t\t\tProblem Number 2.12\n\n\n");

+// Chapter 2: Work, Energy, and Heat

+// Problem 2.12 (page no. 75) 

+// Solution

+

+printf("At the entrance of device,\n");

+p1=200*1000; //200kPa*1000 Pa/kPa  //pressure at the entrance //Unit:N/m^2

+Rho1=1000; //kg/m^3 //Fluid density at entrance

+v1=1/Rho1; //Specific Volume at entrance or reciprocal of fluid density

+FW1=p1*v1; //Flow work at entrance //Unit:N*m/kg

+printf("Flow work = %fN*m/kg\n",FW1);

+

+printf("At the exit of device,\n");

+p2=100*1000; //200kPa*1000 Pa/kPa  //pressure at the exit //Unit:N/m^2

+Rho2=250; //kg/m^3 //Fluid density at exit

+v2=1/Rho2; //Specific Volume at entrance or reciprocal of fluid density

+FW2=p2*v2; //Flow work at exit//Unit:N*m/kg

+printf("Flow work = %f N*m/kg\n",FW2);