One selfmodelling solution of a problem on a planar laminar jet. (Q1123708)

The problem of the flow of a laminar jet which does not mix with the fluid surrounding it is treated in the boundary-layer approximation. It is assumed that both fluids are incompressible, that their surface of separation is smooth and that the jet does not break up. A selfmodelling solution (in Mises variables) of the planar problem is obtained for the special case when the viscosities of the fluids are inversely proportional to their densities.