Darrozes 
LEADING EDGE TRAILING EDGE 
GEOMETRY 
NORMAL 
VELOCITY 
PRESSURE 
DISTRIBUTEUR 
+ 
Py 
Figure 9 A discontinuity in the curvature of the leading 
edge increase the order of the singularity 
IV. THE INNER SOLUTIONS 
With the new variables Y=Y/7 and Z = ——*"4 | the 
ere sae n 
body equationis : x 2 : at s 
nh © at 3 (a5) = nae 
It is easily seen that, in an inner region of order 7 = Bey the bounda- 
ry conditions must not be written on Z =o, but on the exact body 
wall : 
2Y 
az 
Z = + 30am 2.) 
Therefore, the study of the vicinity of a round leading edge requires 
the introduction of an inner layer with a thickness 0(€?), The beha- 
viour of the inner solution at infinity, for this region, is given by the 
outer solution (20) and (23). 
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