Fast flow asymptotics for stochastic incompressible viscous fluids in   $\mathbb{R}^2$ and SPDEs on graphs
  Fast advection asymptotics for a stochastic reaction-diffusion-advection equation are studied in this paper. To describe the asymptotics, one should consider a suitable class of SPDEs defined on a graph, corresponding to the stream function of the underlying incompressible flow. 
Sandra Cerrai, Mark Freidlin
math.PR