1. School of Mathematical Sciences,Fudan University,Shanghai 200433,China 2. Department of Mathematics,Shanghai Maritime University,Shanghai 200135,China
Abstract:
The authors study radial solutions to a model equation for the Navier-Stokes equations.It is shown that the model equation has self-similar singular solution if 5 ≤ n ≤9.It is also shown that the solution will blow up if the initial data is radial,large enough and n ≥ 5.