A general model of deformation and flow in wet fibre webs under compression

Gustafsson, Jan-Erik; Kaul, Vikram

doi:10.3183/npprj-2001-16-02-p149-155

Cited by 8 publications

(6 citation statements)

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“…Computational fluid dynamics (CFD) is often used for these calculations to, for example, optimise the internal geometry of process equipment. Examples include the use of CFD for head-box design [32] and wet-press models [33,34] for press section.…”

Section: Off-line Use Of Simulation and Simulation-based Optimisation In The Pulp And Paper Production Processesmentioning

confidence: 99%

Use of modelling and simulation in the pulp and paper industry

Blanco

Dahlquist

Kappen³

et al. 2009

Mathematical and Computer Modelling of Dynamical Systems

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In pulp and paper the modelling and simulation of the pulp production processes was the first major application. Since then several other applications have been realised though papermaking has never been on the lead concerning the use of computer-based modelling and simulation. The complex nature of the materials is one of the most demanding challenges and the biggest hurdle for any electronic description of the papermaking process or paper itself. So other industries took the lead and it is now for the paper industry to learn from these industries what can be done with the help of computers to control or optimise processes or to design new grades.The application of results gained with the use of modelling and simulation techniques in pulp and paper manufacturing processes has helped the industry to, for example, reduce emissions and increase the productivity and cost-efficiency of the processes. Still there are many important tasks open. A better understanding of the mechanisms of the processes and their control loops has to be achieved in order to further improve the paper quality, stabilise the wet-end chemistry, and enhance the runnability. Important features to be developed are new process designs, efficient process monitoring and systems that offer decision support during operation.In this paper a review of the state of the art on modelling and simulation in the pulp and paper industry is presented as well as further research needs.

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Section: Off-line Use Of Simulation and Simulation-based Optimisation In The Pulp And Paper Production Processesmentioning

confidence: 99%

Use of modelling and simulation in the pulp and paper industry

Blanco

Dahlquist

Kappen³

et al. 2009

Mathematical and Computer Modelling of Dynamical Systems

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show abstract

“…In his work on pressing simulation, Roux [11] underlined that the validation of a pressing model is very difficult, if not impossible, due to the lack of measurements in press sections. Nowadays, some quantitative pressing models are more effective owing to the use of laboratory pilot paper machines [12]. The major part of these models is based on phenomenological approaches of the wet pressed web and therefore there is an obvious need of a database for paper and felt characteristics.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Permeability Measurements of Press Felts

Thibault,

Chave,

Serra-Tosio

et al. 2001

Trans. Of the XIIth Fund. Res. Symp. Oxford, 2001

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“…In order to optimise a press section, models taking into account the considered technology may be used [2][3][4][5]. The results of these models will be in good agreement with reality only if the physical properties of the different components of the press section are known quantitatively (e.g.…”

Section: Introductionmentioning

confidence: 99%

Permeability Measurements of Strained Fibrous Networks

Thibault

Bloch²

2008

Textile Research Journal

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Textiles are used in many industrial applications. For example, they are used in papermaking. Indeed, during the pressing of paper, felts are used to transport the wet paper web and to recover the water expressed from the wet sheet. To improve this operation, felt permeability has to be characterised. This property does depend on the fiber diameter and the whole structure, which is constituted of a base and a batt. Moreover, the different fibers may be mechanically entangled in order to improve the directional permeabilities. This paper describes the equipment developed to measure water permeability of fibrous media. Next, experimental results of felt samples are presented. The investigation on felt permeability tensor allows improvements in both felt design and process modeling. After a brief introduction, this paper is divided into four parts. The first one focuses on the presentation of the experimental device used for the permeability measurements. The second deals with the description of the experimental protocol. Results and discussion are presented in the third part. Finally, a conclusion will end this paper.

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A general model of deformation and flow in wet fibre webs under compression

Cited by 8 publications

References 0 publications

Use of modelling and simulation in the pulp and paper industry

Use of modelling and simulation in the pulp and paper industry

Permeability Measurements of Press Felts

Permeability Measurements of Strained Fibrous Networks

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