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A semi-Lagrangian method for a Fokker-Planck equation describing fiber dynamics

Klar, A.; Reuterswärd, P.; Seaid, M.


A. Klar

P. Reuterswärd


A simplified Fokker-Planck model for the lay-down of fibers on a conveyor belt in the production process of nonwovens is investigated. It takes into account the motion of the fiber under the influence of turbulence. The emphasis in this paper is on the development of a numerical procedure to solve the model. We present a semi-Lagrangian scheme that accurately captures the fiber dynamics and conserves the mass. The scheme allows large time steps to be taken in numerical simulations and requires moderate computing times to obtain steady state solutions. Numerical results and examples are presented and compared for several selection of fiber parameters. The obtained results show that the semi-Lagrangian method is able to reproduce accurately the time development of functionals of the process that are important for the quality assessment of industrial fibers.


Klar, A., Reuterswärd, P., & Seaid, M. (2009). A semi-Lagrangian method for a Fokker-Planck equation describing fiber dynamics. Journal of Scientific Computing, 38(3), 349-367.

Journal Article Type Article
Publication Date Mar 1, 2009
Deposit Date Oct 20, 2009
Journal Journal of Scientific Computing
Print ISSN 0885-7474
Electronic ISSN 1573-7691
Publisher Springer
Peer Reviewed Peer Reviewed
Volume 38
Issue 3
Pages 349-367
Keywords Fiber dynamics, Fokker-Planck equations, Semi-Lagrangian method, Computational engineering.