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

---
 1752/CH7/EX7.13/exa_7_13.sce | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100755 1752/CH7/EX7.13/exa_7_13.sce

(limited to '1752/CH7/EX7.13')

diff --git a/1752/CH7/EX7.13/exa_7_13.sce b/1752/CH7/EX7.13/exa_7_13.sce
new file mode 100755
index 000000000..19f964f45
--- /dev/null
+++ b/1752/CH7/EX7.13/exa_7_13.sce
@@ -0,0 +1,25 @@
+//Exa 7.13
+clc;
+clear;
+close;
+format('v',6)
+//given data
+T1=800;// in K
+T3=200;// in K
+sigma=5.67*10^-8;
+d1=20*10^-2;// in m
+d2=30*10^-2;// in m
+d3=40*10^-2;// in m
+A1=4*%pi*(d1/2)^2;// in m^2
+A2=4*%pi*(d2/2)^2;// in m^2
+A3=4*%pi*(d3/2)^2;// in m^2
+epsilon1=0.2;
+epsilon2=epsilon1
+epsilon3=epsilon1
+Fg12=1/(1/epsilon1+(1/epsilon2-1)*A1/A2);
+Fg23=1/(1/epsilon2+(1/epsilon3-1)*A2/A3);
+// Under steady state condition 
+// q12 = q23
+// A1*Fg12*sigma*(T1^4-T2^4) = A2*Fg23*sigma*(T2^4-T3^4)
+T2 = ((A2*Fg23*T3^4/(A1*Fg12)+T1^4)/(A2*Fg23/(A1*Fg12) + 1))^(1/4)
+disp(T2,"Steady state temperature of the intermediate sphere in K");
-- 
cgit