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Flow between eccentric cylinders: a shear-extensional controllable flow

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Abstract

In this work the non-Newtonian fluid between eccentric cylinders is simulated with finite element method. The flow in the annular gap between the eccentric rotating cylinders was found to be a shear-extensional controllable flow. The influence of rotating speed, eccentricity as well as the radius ratio on the extensional flow in the vicinity of the minimum gap between the inner and outer cylinder was quantitatively investigated. It was found that both the strengths of shear flow and extensional flow could be adjusted by changing the rotating speed. In respect to extensional flow, it was also observed that the eccentricity and radius ratio exert significant influences on the ratio of extensional flow. And it should be noted that the ratio of extensional flow in the mix flow could be increased when increasing the eccentricity and the ratio of shear flow in the mix flow could be increased when increasing the radius ratio.

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Authors and Affiliations

  1. The Key Laboratory of Polymer Processing Engineering, Ministry of Education, South China University of Technology, Wushan Road, Guangzhou, China

    Guoqiang Tian, Mengmeng Wang, Xiaolin Wang & Gang Jin

  2. National Engineering Research Center of Novel Equipment for Polymer Processing, South China University of Technology, Wushan Road, Guangzhou, China

    Guoqiang Tian, Mengmeng Wang, Xiaolin Wang & Gang Jin

Authors
  1. Guoqiang Tian
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  2. Mengmeng Wang
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  3. Xiaolin Wang
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  4. Gang Jin
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Correspondence to Gang Jin.

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Tian, G., Wang, M., Wang, X. et al. Flow between eccentric cylinders: a shear-extensional controllable flow. Korea-Aust. Rheol. J. 28, 139–148 (2016). https://doi.org/10.1007/s13367-016-0013-8

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  • DOI: https://doi.org/10.1007/s13367-016-0013-8

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