Malavard 



(a) (t>Y =0, on z = 0, the free surface 



(b) 90p/3z = Wjjp = Ct , on the wake (z=-d,-s<y<s) 



(c) Bc?l)p/3n = 0, for y = 0, by symmetry. 



(11) 



We can see that these are classical conditions; Dirichlet on the free surface, 

 Neumann with flow continuity on the wake, and Neumann on the symmetry axis — 

 the analog simulation is immediate. Figure 17 shows the distribution of T/sw^ 

 thus obtained, where r is the circulation, s the half- span of the wing, and w^^ the 

 induced velocity, versus y/s for different values of the parameter d/s . These 

 results permit us to approach efficiently the solution of the inverse problem for 

 a supercavitating wing near the free surface. , - 



Fig. 17 - Distribution of r/sv 



390 



