Title: Computation of the Coupled Dynamics of Fibers in a Spray
Authors: Diffo, Patrick
Wulf, Peter
Breuer, Michael 
Language: eng
Subject (DDC): 000 Informatik, Information & Wissen, allgemeine Werke
500 Naturwissenschaften
600 Technik
Issue Date: 2010
Publisher: WILEY-VCH
Document Type: Article
Source: Diffo, P., Wulf, P. and Breuer, M. (2010), Computation of the Coupled Dynamics of Fibers in a Spray. Proc. Appl. Math. Mech., 10: 725-726. https://doi.org/10.1002/pamm.201010347
Journal / Series / Working Paper (HSU): Proceedings in Applied Mathematics and Mechanics (PAMM)
Volume: 10
Issue: 1
Page Start: 725
Page End: 726
Publisher Place: Weinheim
The PUR-fiber-spray molding technology is a manufacturing process which produces polyurethane-based (PUR) composites by spraying the matrix together with reinforcing fibers in a tool form or on a substrate. Thereby chopped fibers are laterally (sidewise) injected in the polyurethane-air spray cone for wetting before the entire composite is spread on the substrate, where it starts curing. To investigate and compute the fiber orientation and density distribution in the final composites manufactured by this process, a new approach simplifying the multiply coupled interaction of the three phases is presented in this paper. Hereby it is presumed that the final position and orientation of a fiber on a substrate results from its dynamics and coupled interactions with air, PUR-droplets and other fibers within the spray cone. Thus, a model of the process is built, that computes the transient behavior of the air-liquid droplets mixture by the CFD code ANSYS Fluent and its influence on the dynamics of the fibers by an extra code called FIDYST. For this multiphase problem two approaches are presented for the droplet-fiber coupling using a concept called “homogenization” of the liquid phase (droplets in the continuous phase).
Organization Units (connected with the publication): Strömungsmechanik 
URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/pamm.201010347
Publisher DOI: 10.1002/pamm.201010347
Appears in Collections:3 - Reported Publications

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