From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1073/CH3/EX3.34/3_34.sce | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100755 1073/CH3/EX3.34/3_34.sce (limited to '1073/CH3/EX3.34') diff --git a/1073/CH3/EX3.34/3_34.sce b/1073/CH3/EX3.34/3_34.sce new file mode 100755 index 000000000..0ad13de11 --- /dev/null +++ b/1073/CH3/EX3.34/3_34.sce @@ -0,0 +1,31 @@ + +clc; +clear; +//Example 3.34 +rho=960.63 //Density in [kg/m^3] +Cp=4.216*10^3 //Specific heat in [J/(kg.K)] +D=16 //Diameter in [cm] +D=D/100 //[m] +k=0.68 //Thermal conductivity in [W/m.K] +A=(%pi*(D/2)^2) +L=A/(%pi*D) //Length=A/P in [m] +Beta=0.75*10^-3 //[K^-1] +alpha=1.68*10^-7 //[m^2/s] +g=9.81 //[m/s^2] +Tw=403 //[K] +T_inf=343 //[K] +dT=Tw-T_inf //[K] +v=0.294*10^-6 //[m^2/s] +Nra=(g*Beta*(L^3)*dT)/(v*alpha) + +//1.For Top surface +Nnu=0.15*(Nra)^(1.0/3.0) //Nusselt number +ht=Nnu*k/L //Heat transfer coeff for top surface in W/(m^2.K) +ht=round(ht) +//2.For bottom surface +Nnu=0.27*Nra^(1.0/4.0) //Nusselt number +hb=Nnu*k/L //[W/sq m.K] +hb=round(hb) +Q=(ht+hb)*A*dT; //[W] +printf("The rate of heat input is %f W",Q) + -- cgit