Numerical prediction of fiber motion in a branching channel flow of fiber suspensions |
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Authors: | Email author" target="_blank">Jianzhong?LinEmail author Shanliang?Zhang James A?Olson |
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Institution: | (1) Department of Mechanics, the State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, 310027, China;(2) Department of Mechanical Engineering, Pulp and Paper Center, The University of British Columbia, Vancouver, BC, Canada, V6T 1Z4 |
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Abstract: | Fiber orientation and dispersion in the dilute fiber suspension that flows through a T-shaped branching channel are simulated numerically based on the slender-body theory. The simulated results are consistent qualitatively with the experimental data available in the literature. The results show that the spatial distribution of fibers is dependent on the fiber aspect ratio, but has no relation with the volume fraction of fiber. The content ratio of fibers near the upper wall increases monotonically with an increasing Re number, and the situation is reverse for the region near the bottom wall. The orientation of fibers depends on Re number, however, the function of fiber volume fraction and aspect ratio is negligible. The fibers near the wall and in the central region of the channel align along the flow direction at all times, but the fibers in the other parts of the channel tend to align along the flow direction only in the downstream region.The project supported by the National Natural Science Foundation of China (10372090) and Doctoral Program of Higher Education in China (20030335001)The English text was polished by Ron Marshall |
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Keywords: | Fiber suspension Distribution Orientation Numerical simulation Branching flow |
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