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+//Exa 6.7

+clc;

+clear;

+close;

+//given data

+L=3;// in m

+delta=0;

+hx='10*x^(-1/4)'

+// (a) Average heat transfer coefficient

+h=1/L*integrate(hx,'x',delta,L);

+disp("(a) Average heat transfer coefficient is : "+string(h)+" W/m^2K")

+

+// (b) Heat transfer rate

+A=3*.3;// in m^2

+Tp=170;// plate temp. in degree C

+Tg=30;// gas temp. in degree C

+del_T=Tp-Tg;

+q=h*A*del_T;// in W

+disp("(b) Heat transfer rate is : "+string(q)+" W")

+

+// (c) 

+x=2;// in m

+qx_by_A= 10*x^(-1/4)*(Tp-Tg);

+disp("Local heat flux 2 m from the leading edge is : "+string(qx_by_A)+" W/m^2");