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+clc;
+clear all;
+disp("Boundary layer thickness")
+
+L=0.750;//m length of plate
+w=0.250;//m width of plate
+Re=2*10^5;// Reynold's number
+v=1*10^(-4);//m^2/s stokes kinematic viscocity
+sg=0.8;// specific gravity of oil
+U=5;//m/s velocity of oil
+x=L/2;
+Re=U*x/v;
+delta=5.*x*1000/(Re)^0.5;//mm
+disp("mm",delta,"Maximum thickness of boundary layer =")
+rho=1000;//kg/m^3
+Cfx=0.664/(Re)^0.5;
+disp(Cfx,"drag coefficient =")
+tauo=Cfx*0.5*rho*sg*U^2;
+disp("N/m^2",tauo,"Shear stress at the middle of plate =")
+ReL=U*L/v;
+Cf=1.328/(ReL)^0.5;
+A=L*w;// area of the plate
+Fd=Cf*0.5*rho*sg*U^2*A;
+disp("N",Fd,"Friction drag on the plate, Fd =")
+
+