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On time discretizations for the batch simulation of the settling-compression process in one dimension

Bürger, Raimund; Diehl, Stefan LU and Mejías, Camilo (2016) In Water Science and Technology 73(5). p.1010-1017
Abstract
The main purpose of the recently introduced Bürger-Diehl simulation model for secondary settling tanks was to resolve spatial discretization problems when both hindered settling and the phenomena of compression and dispersion are included. Straightforward time integration unfortunately means long computational times. The next step in the development is to introduce and investigate time-integration methods for more efficient simulations, but where other aspects such as implementation complexity and robustness are equally considered. This is done for batch settling simulations. The key findings are partly a new time-discretization method and partly its comparison with other specially tailored and standard methods. Several advantages and... (More)
The main purpose of the recently introduced Bürger-Diehl simulation model for secondary settling tanks was to resolve spatial discretization problems when both hindered settling and the phenomena of compression and dispersion are included. Straightforward time integration unfortunately means long computational times. The next step in the development is to introduce and investigate time-integration methods for more efficient simulations, but where other aspects such as implementation complexity and robustness are equally considered. This is done for batch settling simulations. The key findings are partly a new time-discretization method and partly its comparison with other specially tailored and standard methods. Several advantages and disadvantages for each method are given. One conclusion is that the new linearly implicit method is easier to implement than another one (semi-implicit method), but less efficient based on two types of batch sedimentation tests. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
benchmark simulation, Bürger-Diehl simulation model, compressive settling, clarifier, linearly implicit time integration, numerical efficiency
in
Water Science and Technology
volume
73
issue
5
pages
1010 - 1017
publisher
IWA Publishing
external identifiers
  • scopus:84959892185
  • pmid:26942521
  • wos:000374405300005
ISSN
0273-1223
DOI
10.2166/wst.2015.572
language
English
LU publication?
yes
id
d01fc301-af92-4b9d-a0f4-20d0dfde66a2 (old id 8165156)
date added to LUP
2016-01-29 21:46:29
date last changed
2017-02-13 13:14:08
@article{d01fc301-af92-4b9d-a0f4-20d0dfde66a2,
  abstract     = {The main purpose of the recently introduced Bürger-Diehl simulation model for secondary settling tanks was to resolve spatial discretization problems when both hindered settling and the phenomena of compression and dispersion are included. Straightforward time integration unfortunately means long computational times. The next step in the development is to introduce and investigate time-integration methods for more efficient simulations, but where other aspects such as implementation complexity and robustness are equally considered. This is done for batch settling simulations. The key findings are partly a new time-discretization method and partly its comparison with other specially tailored and standard methods. Several advantages and disadvantages for each method are given. One conclusion is that the new linearly implicit method is easier to implement than another one (semi-implicit method), but less efficient based on two types of batch sedimentation tests.},
  author       = {Bürger, Raimund and Diehl, Stefan and Mejías, Camilo},
  issn         = {0273-1223},
  keyword      = {benchmark simulation,Bürger-Diehl simulation model,compressive settling,clarifier,linearly implicit time integration,numerical efficiency},
  language     = {eng},
  number       = {5},
  pages        = {1010--1017},
  publisher    = {IWA Publishing},
  series       = {Water Science and Technology},
  title        = {On time discretizations for the batch simulation of the settling-compression process in one dimension},
  url          = {http://dx.doi.org/10.2166/wst.2015.572},
  volume       = {73},
  year         = {2016},
}