Fluid-like representation of Fickian diffusion

E. Heifetz*, S. Zucker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Here, we show that the fundamental Fickian process of diffusion can be equivalently described by a pressureless, compressible, and irrotational flow dynamics, whose effective force is governed by the divergence of the viscous stress tensor. This brings together the seemingly unrelated processes of mass and momentum transports.

Original languageEnglish
Article number011701
JournalPhysics of Fluids
Issue number1
StatePublished - 1 Jan 2022


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