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Dissipative particle dynamics simulations for fibre suspensions in newtonian and viscoelastic fluids
Authors:Duc Duong-Hong  Nhan Phan-Thien  Khoon Seng Yeo  Gilles Ausias
Affiliation:1. School of Materials Science and Engineering, Nanyang Technological University, N3-B4-W310 Nanyang Avenue, 639798 Singapore, Singapore;2. Abbott Vascular, 3200 Lakeside Dr., Santa Clara, CA 95054, USA;3. Chemical Engineering and Materials Science, UC Davis, 3014 Bainer Hall, CA 95616, USA;4. Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore;5. LIMATB, Université de Bretagne-Sud, Rue de St-Maudé, BP 92116, 56321 Lorient Cedex, France;1. Department of Computer Science, University of Engineering & Technology, Lahore, Pakistan;2. Department of Computer Science, University of Sheffield, United Kingdom;2. Department of Mathematics, Faculty of Mathematics and Computer Science, University of Bucharest, 14 Academiei, 010014 Bucharest, Romania;3. Institute of Solid Mechanics, Romanian Academy, 15 Constantin Mille, 010141 Bucharest, Romania;1. Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Rd., Cleveland, OH 44106-7202, USA;2. Institute for Polymers and Composites/I3N, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal;1. Institut de Radioprotection et de Sûreté Nucléaire, B.P. 3, 13115 Saint-Paul-lez-Durance Cedex, France;2. Aix Marseille Univ, CNRS, Centrale Marseille, LMA, Marseille, France, UPR 7051, F-13402 Marseille Cedex 20, France;3. Laboratoire de Micromécanique et Intégrité des Structures, IRSN-CNRS-UM, B.P. 3, 13115 Saint-Paul-lez-Durance Cedex, France;1. Department of Mechanical Engineering, Jönköping University, SE-55111 Jönköping, Sweden;2. Department of Mathematics and Mathematical Statistics, Umeå University, SE-90187 Umeå, Sweden
Abstract:A versatile model of fibre suspensions in Newtonian and viscoelastic fluids has been developed using dissipative particle dynamics method. The viscoelastic fluid is modelled by linear chains with linear connector spring force (the Oldroyd-B model), which is known to be a reasonable model for the so-called Boger fluid (a dilute suspension of polymer in a highly viscous solvent). The numerical results are in excellent agreement with the analytical results of the Oldroyd-B model in simple shear flow. An effective meso-scale model of fibre in DPD is proposed and then incorporated with simple Newtonian fluid and our Boger fluid to enable entirely study rheological properties of fibre suspensions in both Newtonian and viscoelastic solvents. The numerical results are well compared with available experimental data and other numerical models.
Keywords:
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