initial commit / add all books

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+clc;

+//Example 26.9

+//page no 394

+printf("Example 26.9 page no 394\n\n");

+//turbulent flow of water through a carbon bed

+d_p=0.001//particle diameter

+meu=0.001//viscosity of water

+e=0.25//porosity

+R_e=1000//R_e is >1000 for turbulent flow,for minimum pressure drop

+rho=1000//density of water,kg/m^3

+v_s=R_e*meu*(1-e)/(d_p*rho)//superficial velocity

+printf("\n superficial velocity v_s=%f m/s",v_s);

+phi_s=1//spehercity

+L=0.5//length of bed,m

+P_drop = 1.75*rho*L*v_s^2*(1-e)/(phi_s*d_p*(e^3))//presssure drop

+printf("\npressure drop P_drop=%f Pa",P_drop);