title: Accurate discretization of advection-diffusion equations.
abstract: We present an exact mathematical transformation which converts a wide class of advection-diffusion equations into a form allowing simple and direct spatial discretization in all dimensions, and thus the construction of accurate and more efficient numerical algorithms. These discretized forms can also be viewed as master equations which provide an alternative mesoscopic interpretation of advection-diffusion processes in terms of diffusion with spatially varying hopping rates.
authors.affiliation: Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85284, USA. ramon.grima@asu.edu
authors.forename: R
authors.initials: R
authors.lastname: Grima
authors.forename: T J
authors.initials: TJ
authors.lastname: Newman