A dynamic object-oriented model for efficient simulation of microbial reduction in dispersed turbulent flow
Skoglund, Tomas LU and Dejmek, Petr LU
(2008)
In Journal of Food Engineering
86(3).
p.358-369
- Abstract
- To account for microbial reduction and food quality changes, first-order chemical reaction was added to a model for axial-dispersed plug flow (ADPF), which was recently developed for efficient (In the terminology of this paper, efficient is related to computation time for a given level of accuracy.) computation of time-dependent, large flow systems. It was shown that the extended ADPF model gives accurate results for typical parameter values in liquid-food applications. The analysis was based on Laplace transforms and the models were written in the object-oriented language Modelica, as objects in a library structure which is being developed to simulate complex liquid-food process lines and their control systems. The models were also... (More)
- To account for microbial reduction and food quality changes, first-order chemical reaction was added to a model for axial-dispersed plug flow (ADPF), which was recently developed for efficient (In the terminology of this paper, efficient is related to computation time for a given level of accuracy.) computation of time-dependent, large flow systems. It was shown that the extended ADPF model gives accurate results for typical parameter values in liquid-food applications. The analysis was based on Laplace transforms and the models were written in the object-oriented language Modelica, as objects in a library structure which is being developed to simulate complex liquid-food process lines and their control systems. The models were also implemented in such a way as to efficiently account for non-isothermal reactions in heat exchangers.
Furthermore, to account for changes in flow rates, a model of dynamically calculating the “true” holding time in a channel was developed. Simulations showed that the model performs better than a straightforward alternative. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/578195
- author
- Skoglund, Tomas
LU
and Dejmek, Petr
LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Dynamic simulation, Liquid-food, Microorganisms, Heat exchanger, Dynamic model, Residence time distribution, Chemical reaction, Microbial reduction, Tube reactor, Dispersion
- in
- Journal of Food Engineering
- volume
- 86
- issue
- 3
- pages
- 358 - 369
- publisher
- Elsevier
- external identifiers
-
- wos:000253064400007
- scopus:37449022413
- ISSN
- 0260-8774
- DOI
- 10.1016/j.jfoodeng.2007.10.013
- language
- English
- LU publication?
- yes
- id
- c452e431-6ca9-44bc-9206-ebce0f7e46bf (old id 578195)
- date added to LUP
- 2016-04-01 13:43:17
- date last changed
- 2023-09-03 03:56:59
@article{c452e431-6ca9-44bc-9206-ebce0f7e46bf,
abstract = {{To account for microbial reduction and food quality changes, first-order chemical reaction was added to a model for axial-dispersed plug flow (ADPF), which was recently developed for efficient (In the terminology of this paper, efficient is related to computation time for a given level of accuracy.) computation of time-dependent, large flow systems. It was shown that the extended ADPF model gives accurate results for typical parameter values in liquid-food applications. The analysis was based on Laplace transforms and the models were written in the object-oriented language Modelica, as objects in a library structure which is being developed to simulate complex liquid-food process lines and their control systems. The models were also implemented in such a way as to efficiently account for non-isothermal reactions in heat exchangers.<br/><br>
<br/><br>
Furthermore, to account for changes in flow rates, a model of dynamically calculating the “true” holding time in a channel was developed. Simulations showed that the model performs better than a straightforward alternative.}},
author = {{Skoglund, Tomas and Dejmek, Petr}},
issn = {{0260-8774}},
keywords = {{Dynamic simulation; Liquid-food; Microorganisms; Heat exchanger; Dynamic model; Residence time distribution; Chemical reaction; Microbial reduction; Tube reactor; Dispersion}},
language = {{eng}},
number = {{3}},
pages = {{358--369}},
publisher = {{Elsevier}},
series = {{Journal of Food Engineering}},
title = {{A dynamic object-oriented model for efficient simulation of microbial reduction in dispersed turbulent flow}},
url = {{https://lup.lub.lu.se/search/files/3553132/581707.pdf}},
doi = {{10.1016/j.jfoodeng.2007.10.013}},
volume = {{86}},
year = {{2008}},
}