// Display mode mode(0); // Display warning for floating point exception ieee(1); clc; disp("Principles of Heat Transfer, 7th Ed. Frank Kreith et. al Chapter - 7 Example # 7.8 ") //Temperature of plate in degree C Tplate = 60; //Temperature of jet in degree C T = 20; //Thermal conductivity in W/mK k = 0.0265; //Dynamic viscosity in Ns/m2 mu = 0.00001912; //Prandtl number Pr = 0.71; //Density in kg/m3 rho = 1.092; //Mass flow rate in kg/s m = 0.008; //Width of jet in m w = 3/1000; //Length of jet in m l = 20/1000; //Velocity of jet in m/s v = 10; //Exit distance in m z = 0.01; //Width given for plate in m L = 0.04; //Reynolds number Re = ((rho*v)*w)/mu; //From Eq. (7.68) with x= 0.02 m, z =0.01 m, and w= 0.003 m //Nusselt number Nu = 11.2; // ! L.33: mtlb(d) can be replaced by d() or d whether d is an M-file or not. //Heat transfer coefficient in W/m2K h = (Nu*k)/mtlb(w); disp("Heat transfer rate from the plate in W is") //Heat transfer rate from the plate in W q = ((h*L)*l)*(Tplate-T)