We consider a system of random walks on graph approximations of the Sierpinski gasket, coupled with a zero-range interaction. We prove that the hydrodynamic limit of this system is given by a nonlinear heat equation on the Sierpinski gasket.
Jara, M. (2009). Hydrodynamic Limit for a Zero-Range Process in the Sierpinski Gasket. Communications in Mathematical Physics, 288(2), 773-797. https://doi.org/10.1007/s00220-009-0746-z (Original work published 2009)