From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001 From: prashantsinalkar Date: Tue, 10 Oct 2017 12:27:19 +0530 Subject: initial commit / add all books --- 3685/CH18/EX18.10/Ex18_10.sce | 27 +++++++++++++++++++++++++++ 3685/CH18/EX18.10/Ex18_10.txt | 4 ++++ 2 files changed, 31 insertions(+) create mode 100644 3685/CH18/EX18.10/Ex18_10.sce create mode 100644 3685/CH18/EX18.10/Ex18_10.txt (limited to '3685/CH18/EX18.10') diff --git a/3685/CH18/EX18.10/Ex18_10.sce b/3685/CH18/EX18.10/Ex18_10.sce new file mode 100644 index 000000000..8ccdf32cb --- /dev/null +++ b/3685/CH18/EX18.10/Ex18_10.sce @@ -0,0 +1,27 @@ +clc +b = 10 // width of plate in cm +h = 15 // Height of plate in cm +hr = 8.72 // Radiative heat transfer coefficient in W/m^2K +tw = 140 // temperature of wall in degree Celsius +tf = 20 // Atmospheric temperature in degree Celsius +v = 2.109e-5 // Coefficient of dynamic viscosity in m^2/s +Pr = 0.692 // Prantl number +K = 0.0305 // Thermal conductivity in W/mK +L = 0.15 // characteristic length in m +g = 9.81 // Gravitational acceleration in m/s^2 + +printf("\n Example 18.10\n") +A = 2*b*1e-2*h*1e-2 // total area of plate +t_mean = (tw+tf)/2 +273 +B = 1/t_mean +del_t = tw-tf +Gr = g*B*del_t*L^3/v^2 // Grashoff number +x = Gr*Pr +if x<1e9 then + Nu = 0.59*(Gr*Pr)^0.25 +end +hc = Nu*K/L +Q = (hc+hr)*A*del_t // Rate of heat dissipation +printf("\n Rate of heat dissipation is %f W",Q) +//The answers vary due to round off error + diff --git a/3685/CH18/EX18.10/Ex18_10.txt b/3685/CH18/EX18.10/Ex18_10.txt new file mode 100644 index 000000000..9df0b0436 --- /dev/null +++ b/3685/CH18/EX18.10/Ex18_10.txt @@ -0,0 +1,4 @@ + + Example 18.10 + + Rate of heat dissipation is 59.329572 W \ No newline at end of file -- cgit