Implementation for blow up of tornado-type solutions for complex version   of 3D Navier-Stokes system
  We consider Cauchy problem for Fourier transformation of 3-dimensional Navier-Stokes system with zero external force. Using initial data purposed by Dong Li and Ya.G.Sinai we implement self-similar regime producing fast growing behavior of the energy of solution while time tends to critical value. 
M.D. Arnold and A.V. Khokhlov