<,6- cMO-O 



0.0507 



I,'/ -0.1521 



.3042 



Figure 242 — Some streamlines and traces 



of equipotential surfaces in a plane through 



the axis at A, for fluid issuing through a 



round hole in an infinite plane wall, shown 



in part as CD. The surface of the issuing 



jet lies along CB. See Section 144. 



(Copied from Reference 238.) 



145. OTHER THREE-DIMENSIONAL CASES 



The following cases of relative motion between bodies and fluid have been treated: 



(a) A spherical bowl, — see Basset, I. p. 149; 



(b) An anchor ring, — see references on p. 156 of Reference 2. 



(c) Solid produced by revolving a limacon about its axis, by Bateman,'^'*° — see end of 

 Chapter V. 



(d) Solids of revolution in general, by Kaplan. 



(e) Certain special shapes of bodies by Kolossoff'^''^ and Greenhill.^''^ 



(f) Ellipsoid moving in a curved stream by Tallmien.^^^ 



(g) A point source on a sphere, by Masotti,'^'*^ or on the axis of an oblate spheroid or a 

 circular disk or near a round hole in a plate, by Nicholson; 



(h) A line vortex near a spheroid, by Poggi; 



(i) Motion of two spheroids, by Sen;^"* 



(j) Two coaxial circular disks in a stream, by Sircar^""^ and Nomura. '^'^^ The disks repel 

 each other in proportion to cos^cS, where (i> is the angle between the direction of the 

 stream at infinity and the normal to the disks, and also experience torques tending to 

 increase cos^ <i. 



3T9 



