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

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Error in Monte Carlo, quasi-error in Quasi-Monte Carlo

While the Quasi-Monte Carlo method of numerical integration achieves smaller integration error than standard Monte Carlo, its use in particle physics phenomenology has been hindered by the abscence of a reliable way to estimate that error. The standard Monte Carlo error estimator relies on the assumption that the points are generated independently of each other and, therefore, fails to account ...

متن کامل

Monte Carlo Extension of Quasi-monte Carlo

This paper surveys recent research on using Monte Carlo techniques to improve quasi-Monte Carlo techniques. Randomized quasi-Monte Carlo methods provide a basis for error estimation. They have, in the special case of scrambled nets, also been observed to improve accuracy. Finally through Latin supercube sampling it is possible to use Monte Carlo methods to extend quasi-Monte Carlo methods to hi...

متن کامل

Monte Carlo and quasi-Monte Carlo methods

Monte Carlo is one of the most versatile and widely used numerical methods. Its convergence rate, O(N~^), is independent of dimension, which shows Monte Carlo to be very robust but also slow. This article presents an introduction to Monte Carlo methods for integration problems, including convergence theory, sampling methods and variance reduction techniques. Accelerated convergence for Monte Ca...

متن کامل

Quasi Monte Carlo Integration in Grid Environments: Further Leaping Effects

The splitting of Quasi-Monte Carlo (QMC) point sequences into interleaved substreams has been suggested to raise the speed of distributed numerical integration and to lower the traffic on the network. The usefulness of this approach in GRID environments is discussed. After specifying requirements for using QMC techniques in GRID environments in general we review and evaluate the proposals made ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Water Research

سال: 2021

ISSN: ['0043-1354', '1879-2448']

DOI: https://doi.org/10.1016/j.watres.2021.116953