Brard 
a oe --. (M') 
scifg Ses aan le 
D. 
' : 
F —, [= ie } Vals aZow’)] I Ven if Me D. ; 
BT maleate > MM! “ehh Oe ae he 
The same formula applied to V inside De gives: 
(SOAV Jn 2, n Vv) I 
woffa ddu(M »| F grad = ee ee oo a 2M") = 
Adding these two equations and taking into account the boundary con- 
dition (3.1), we get 
ee 7 (nat o- (M') 
Vee onl eff E00 sf SE) | = 
ae (3%) 
Vig (M) if MED, 
" V(M) if MED,, 
where 
(3.3) 
T(m') = -#,, s/o) : Vt) | on Se 
This shows that the vorticity distribution 
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