首页 | 本学科首页   官方微博 | 高级检索  
     检索      


On the fiber orientation in steady recirculating flows involving short fibers suspensions
Authors:Kunji Chiba  Amine Ammar  Francisco Chinesta
Institution:(1) Faculty of Education, Shiga University, 2-5-1 Hiratsu, Otsu, Shiga 520-0862, Japan;(2) Laboratoire de Rhéologie, 1301 rue de la piscine, BP 53 Domaine universitaire, 38041 Grenoble Cedex 9, France;(3) LMSP (Laboratoire de Mécanique des Systèmes et des Procédés) UMR CNRS—ENSAM—ESEM, 151 Boulevard de lrsquoHôpital, F-75013 Paris, France
Abstract:In this work we present a new numerical strategy to treat the 3D Fokker–Planck equation in steady recirculating flows. This strategy combines some ideas of the method of particles, with a more original treatment of the periodicity condition, which characterizes the steady solution of the FP equation in steady recirculating flows, as usually encountered in some rheometric devices. Using this numerical technique the fiber orientation distribution can be computed accurately in any steady recirculating flow. The simulation results can be used to identify some rheological parameters of the suspension, using an inverse technique, as well as to analyze the validity of some simplified models widely used, which require a closure relation. Thus, in this paper several closure relations of the fourth-order orientation tensor will be discussed in the context of a numerical example involving a steady recirculating flow.
Keywords:Short fiber suspensions  Fokker–  Planck equation  Particle strategy  Steady recirculating flows  Closure relations
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号