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

---
 587/CH4/EX4.9/example4_9.sce | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100755 587/CH4/EX4.9/example4_9.sce

(limited to '587/CH4/EX4.9/example4_9.sce')

diff --git a/587/CH4/EX4.9/example4_9.sce b/587/CH4/EX4.9/example4_9.sce
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+clear;
+clc;
+
+//Example4.9[Heat transfer from a Short Cylinder]
+//Given:-
+Ti=120;//Initial Temperature[degree Celcius]
+T_ambient=25;//Temperature of atmospheric air[degree Celcius]
+rho=8530;//density of brass cyliner[kg/m^3]
+Cp=0.380;//Specific heat of brass cylinder[kJ/kg.degree Celcius]
+r=0.05;//radius[m]
+H=0.12;//Height of cylinder[m]
+h=60;//convetcion heat transfer coefficient[W/m^2.degree Celcius]
+a=3.39*(10^(-5));//Diffusivity of brass [m^2/s]
+k=110;//Thermal conductivity of brass[W/m.degree Celcius]
+L=0.06;//[m]
+t=900;//[seconds]
+//Solution:-
+m=rho*(%pi*(r^2)*H);//mass of cylinder[kg]
+Q_max=m*Cp*(Ti-T_ambient);//[kJ]
+disp("At the center of the plane wall")
+tau1=(a*t)/(L^2);
+Bi1=(h*L)/k;
+x=(Bi1^2)*tau1;
+//For given x and Bi1
+p=0.23;//(Q/Qmax) for plane wall
+disp("At the center of the cylinder")
+tau2=(a*t)/(r^2);
+Bi2=(h*r)/k;
+y=(Bi2^2)*tau2;
+//For given y and Bi2
+q=0.47;//(Q/Qmax) for infinite cylinder
+Q=Q_max*(p+(q*(1-p)));//[kJ]
+disp("kJ",ceil (Q),"The total heat transfer from the cylinder during the first 15 minutes of cooling is")
\ No newline at end of file
-- 
cgit