Impact of velocity correlations on longitudinal dispersion in space-Lagrangian advective transport models
نویسندگان
چکیده
Space-Lagrangian random walk models conceptualize advective transport in heterogeneous media terms of collections particles undergoing fixed-length steps along flow streamlines. We study the impact velocity correlation structure on longitudinal dispersion for different point statistics. find that asymptotic equivalence requires step length an uncorrelated continuous time to be higher than when correlations decay exponentially with distance. characterize conditions broad classes distributions.
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ژورنال
عنوان ژورنال: Physical review fluids
سال: 2022
ISSN: ['2469-9918', '2469-990X']
DOI: https://doi.org/10.1103/physrevfluids.7.024501