Kerry Landman, Mark Mcguinness, "Mean action time for diffusive processes", Advances in Decision Sciences, vol. 4, Article ID 459627, 17 pages, 2000. https://doi.org/10.1155/S1173912600000092
Mean action time for diffusive processes
For a number of diffusive processes involving heat and mass transfer, a convenient and easy way to solve for penetration time or depth is to consider an averaged quantity called mean action time. This approach was originally developed by Alex McNabb, in collaboration with other researchers. It is possible to solve for mean action time without actually solving the full diffusion problem, which may be nonlinear, and may have internal moving boundaries. Mean action time satisfies a linear Poisson equation, and only works for finite problems. We review some nice properties of mean action time, and discuss some recent novel applications.
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