1 files changed, 17 insertions, 0 deletions
diff --git a/965/CH4/EX4.20/20.sci b/965/CH4/EX4.20/20.sci
new file mode 100644
index 000000000..6b94fe4f1
--- /dev/null
+++ b/965/CH4/EX4.20/20.sci
@@ -0,0 +1,17 @@
+clc;
+clear all;
+disp("time required")
+x=12/1000;//m
+a=1.2*10^(-5);//m^2/s
+ti=745;// degree C
+ta=20;// degree C
+t=595;// degree C
+
+
+T1=(t-ta)/(ti-ta);
+erfM=T1;
+M=0.9;// from tables
+tau=((x/M)^2)/(4*a);
+disp("seconds",tau,"Tau =")
+
+