Annotation
				The nonlinear evolution of two-dimensional flows with flow lines represented by angle-modulated circles has been considered for an ideal fluid. To solve the problem, an approximate Burgers equation has Ьеец derived for the flow function and analogies with wave problems of nonlinear acbustics have been used.
						© 2016 Publisher M.V.Lomonosov Moscow State University
				
					Authors
				Yu.N. Makov, O.V. Rudenko
Department of Acoustics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
				Department of Acoustics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia



