A quasi-Monte Carlo based flocculation model for fine-grained cohesive sediments in aquatic environments
نویسندگان
چکیده
The quasi-Monte Carlo (QMC) method was enhanced to solve the population balance model (PBM) including aggregation and fragmentation processes for simulating temporal evolutions of characteristic sizes floc size distributions (FSDs) cohesive sediments. Ideal cases with analytical solutions were firstly adopted validate this QMC illustrate selected pure aggregation, fragmentation, combined systems. Two available laboratory data sets, one suspended kaolinite other a mixture montmorillonite, further used monitor FSDs sediments in controlled shear conditions. results show reasonable agreements both experiments. Moreover, different schemes tested compared standard Monte scheme Latin Hypercube Sampling optimize performance. It shows that all perform better accuracy time consumption than scheme. In particular, schemes, using Halton sequence requires least particle numbers simulated system reach accuracy. sensitivity tests, we also fractal dimension distribution function have large impacts on predicted FSDs. This study indicates great advance employing PBM flocculation
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ژورنال
عنوان ژورنال: Water Research
سال: 2021
ISSN: ['0043-1354', '1879-2448']
DOI: https://doi.org/10.1016/j.watres.2021.116953