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+clear
+clc
+//Example 9.3 LAMINAR BOUNDARY-LAYER THICKNESS AND SHEAR STRESS
+Uo=1; //[ft/s]
+v=10^-4; //[ft^2/s]
+S=0.86; //specific gravity
+rho=1.94*S //density [slugs/ft^3]
+mu=rho*v //[lbf.s/ft^2]
+//Graph plots
+x=linspace(0.1,7,15); //distance[ft]
+delta=5*(sqrt(v*x/Uo))*12; //boundary layer thickness [inch]
+To=0.332*mu*Uo*sqrt(Uo*(v*x)^-1)*10^2; //sheer stress in 100 [psf]
+plot(x,delta,"+-")
+plot(x,To,"o-")
+xtitle("delta,To vs x","Distance,ft ","delta (inches), Tox100 (psf)");
+legend("Boundary layer thickness (delta)","Surface sheer stress (To)");
+\ No newline at end of file