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clc;
clear;
//Example 3.41
rho=0.910; //Density in [kg/m^3]
Cp=1.009*1000; //[J/kg.K]
k=0.0331; //[W/m.K]
mu=22.65*10^-6; //[N.s/m^2]
//Let a=smaller side
//b=bigger side
//Qa=ha*A*dT
//Qb=hb*A*dT
//Qa=1.14*Qb
//Given a*b=15*10^-4
//On solving we get:
a=0.03; //[m]
b=0.05; //[m]
A=a*b //Area in [sq m]
Tf=388; //[K]
Beta=1/Tf //[K^-1]
T1=303; //[K]
T2=473; //[K]
dT=T2-T1 //[K]
v=mu/rho
g=9.81 //m/s^2[acceleration due to gravity ]
hb=0.59*(((g*Beta*dT*(b^3))/(v^2))*Cp*mu/k)^(1/4)*(k/b) //[W/sq m.K]
Qb=hb*A*(dT) //[W]
Qa=1.14*Qb //[W]
printf("\nDimensions of the plate are %fx%f m\n",a,b);
printf("\nHeat transfer when the bigger side held vertical is %f W\n",Qb);
printf("\nHeat transfer when the small side held vertical is %f W\n",Qa);
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