

 X h 



.6 KM 



hi 



651 



Z I 1 



2M 



-^- 



Figure E.5 



Same as E.4 except computed with the combined upward and 

 and central difference scheme. 



1.6 KM 

 X I 1 



n z 



774 



Z I 1 



2M 



-^- 



Figure E.6 



Inl tLllliir'' """"""' "''" ""'''' <""-ence scheme 



262 



