Applied Mathematics and Mechanics (English Edition) ›› 2019, Vol. 40 ›› Issue (11): 1647-1656.doi: https://doi.org/10.1007/s10483-019-2535-6

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Numerical solution of oscillatory flow of Maxwell fluid in a rectangular straight duct

Xuyang SUN, Shaowei WANG, Moli ZHAO, Qiangyong ZHANG   

  1. Department of Engineering Mechanics, School of Civil Engineering, Shandong University, Jinan 250061, China
  • 收稿日期:2019-01-19 修回日期:2019-05-23 出版日期:2019-11-01 发布日期:2019-10-28
  • 通讯作者: Shaowei WANG E-mail:shaoweiwang@sdu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Nos. 11672164 and 41831278) and the Taishan Scholars Project Foundation of Shandong Province of China

Numerical solution of oscillatory flow of Maxwell fluid in a rectangular straight duct

Xuyang SUN, Shaowei WANG, Moli ZHAO, Qiangyong ZHANG   

  1. Department of Engineering Mechanics, School of Civil Engineering, Shandong University, Jinan 250061, China
  • Received:2019-01-19 Revised:2019-05-23 Online:2019-11-01 Published:2019-10-28
  • Contact: Shaowei WANG E-mail:shaoweiwang@sdu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos. 11672164 and 41831278) and the Taishan Scholars Project Foundation of Shandong Province of China

摘要: A numerical analysis is presented for the oscillatory flow of Maxwell fluid in a rectangular straight duct subjected to a simple harmonic periodic pressure gradient. The numerical solutions are obtained by a finite difference scheme method. The stability of this finite difference scheme method is discussed. The distributions of the velocity and phase difference are given numerically and graphically. The effects of the Reynolds number, relaxation time, and aspect ratio of the cross section on the oscillatory flow are investigated. The results show that when the relaxation time of the Maxwell model and the Reynolds number increase, the resonance phenomena for the distributions of the velocity and phase difference enhance.

关键词: Maxwell fluid, oscillatory flow, finite difference method, rectangular duct

Abstract: A numerical analysis is presented for the oscillatory flow of Maxwell fluid in a rectangular straight duct subjected to a simple harmonic periodic pressure gradient. The numerical solutions are obtained by a finite difference scheme method. The stability of this finite difference scheme method is discussed. The distributions of the velocity and phase difference are given numerically and graphically. The effects of the Reynolds number, relaxation time, and aspect ratio of the cross section on the oscillatory flow are investigated. The results show that when the relaxation time of the Maxwell model and the Reynolds number increase, the resonance phenomena for the distributions of the velocity and phase difference enhance.

Key words: Maxwell fluid, oscillatory flow, finite difference method, rectangular duct

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