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A Molecular Dynamics Study of Lubrication Rheology of Polymer Fluids

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Abstract

This study investigated the characteristics of lubrication rheology for polymer fluids using the molecular dynamics method. The confining potential and FENE potential were used to describe the bonding force in a polymer chain. Both Poiseuille and Couette flows were simulated and the results are presented for the density distribution, velocity profiles, slip ratio, viscosity, and relation between shear stress and shear rate. The effects of the number of molecular layers and film thickness on the rheology characteristics were also investigated.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Chung Cheng University, Ming-Hsiung, Chia-Yi, Taiwan, 621

    Yeau-Ren Jeng & Chia-Chen Chen

  2. Department of Mechanical Engineering, Wu-Feng Institute of Technology, Ming-Hsiung, Chia-Yi, Taiwan, 621

    Shiuh-Hwa Shyu

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  1. Yeau-Ren Jeng
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  2. Chia-Chen Chen
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  3. Shiuh-Hwa Shyu
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Jeng, YR., Chen, CC. & Shyu, SH. A Molecular Dynamics Study of Lubrication Rheology of Polymer Fluids. Tribology Letters 15, 293–299 (2003). https://doi.org/10.1023/A:1024825506168

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