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Numerical Simulations of the Flow of a Dense Suspension Exhibiting Yield-Stress and Shear-Thinning Effects

Author

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  • Meng-Ge Li

    (School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China)

  • Feng Feng

    (School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China)

  • Wei-Tao Wu

    (School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China)

  • Mehrdad Massoudi

    (U.S. Department of Energy, National Energy Technology Laboratory (NETL), Pittsburgh, PA 15236, USA)

Abstract

Many types of dense suspensions are complex materials exhibiting both solid-like and fluid-like behavior. These suspensions are usually considered to behave as non-Newtonian fluids and the rheological characteristics such as yield stress, thixotropy and shear-thinning/thickening can have significant impact on the flow and the engineering applications of these materials. Therefore, it is important to understand the rheological features of these fluids. In this paper, we study the flow of a nonlinear fluid which exhibits yield stress and shear-thinning effects. The geometries of interests are a straight channel, a channel with a crevice and a pipe with a contraction; we assume the fluid behaves as a Herschel-Bulkley fluid. The numerical simulations indicate that for flows with low Reynolds number and high Bingham number an unyielded plug may form in the center of the channel. In the case of a channel with a crevice, the fluid in the deep portion of the crevice is at an extremely high level of viscosity, forming a plug which is hard to yield. For the pipe with a contraction, near the pipe neck the unyielded region is smaller due to the enhanced flow disturbance.

Suggested Citation

  • Meng-Ge Li & Feng Feng & Wei-Tao Wu & Mehrdad Massoudi, 2020. "Numerical Simulations of the Flow of a Dense Suspension Exhibiting Yield-Stress and Shear-Thinning Effects," Energies, MDPI, vol. 13(24), pages 1-21, December.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:24:p:6635-:d:462962
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    References listed on IDEAS

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    1. Arild Saasen & Jan David Ytrehus, 2020. "Viscosity Models for Drilling Fluids—Herschel-Bulkley Parameters and Their Use," Energies, MDPI, vol. 13(20), pages 1-16, October.
    2. Chengcheng Tao & Barbara G. Kutchko & Eilis Rosenbaum & Wei-Tao Wu & Mehrdad Massoudi, 2019. "Steady Flow of a Cement Slurry," Energies, MDPI, vol. 12(13), pages 1-25, July.
    3. Qin-Liu Cao & Mehrdad Massoudi & Wen-He Liao & Feng Feng & Wei-Tao Wu, 2019. "Flow Characteristics of Water-HPC Gel in Converging Tubes and Tapered Injectors," Energies, MDPI, vol. 12(9), pages 1-16, April.
    4. Li, Yubai & Wu, Wei-Tao & Liu, Xianglei & Massoudi, Mehrdad, 2019. "The effects of particle concentration and various fluxes on the flow of a fluid-solid suspension," Applied Mathematics and Computation, Elsevier, vol. 358(C), pages 151-160.
    5. Zhou, Zhifu & Wu, Wei-Tao & Massoudi, Mehrdad, 2016. "Fully developed flow of a drilling fluid between two rotating cylinders," Applied Mathematics and Computation, Elsevier, vol. 281(C), pages 266-277.
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    Cited by:

    1. Mehrdad Massoudi, 2021. "Mathematical Modeling of Fluid Flow and Heat Transfer in Petroleum Industries and Geothermal Applications 2020," Energies, MDPI, vol. 14(16), pages 1-4, August.

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