Numerical simulation of flow around a cylinder under different reynolds number

Qiang Liu, Wei Xie, Wen Yang Duan, Chang Hong Hu

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Based on fully structured grids parallel numerical simulations of flow around a cylinder under different Reynolds number are carried out. Two-dimensional and three-dimensional models are established at the same time under specific Reynolds number, and further analyze of three-dimensional flow characteristics as well as the generated influence to overall physical quantities are presented. In order to explore efficient high Reynolds number turbulence models, a comparative research of the LES model without wall functions and the Spalart-Allmaras turbulence model is carried out. In order to improve the computational efficiency, a domain decomposition parallel computing strategy is used, and a calculation strategy that results of coarse grid was assigned to fine grid as initial field value by 3D linear interpolation is presented. Simulation results show that: Drag coefficient and Strouhal number have very good consistency with the experimental data, which verifies the correctness of the calculation method; Even if at low Reynolds number (200≤Re≤300), using a three-dimensional model is still necessary; While in the high Reynolds number stage, compared to LES model without wall functions, Spalart-Allmaras model is more applicable and more efficient.

本文言語英語
ホスト出版物のタイトルVehicle, Mechatronics and Information Technologies II
出版社Trans Tech Publications
ページ434-440
ページ数7
ISBN(印刷版)9783038350606
DOI
出版ステータス出版済み - 1 1 2014
イベントInternational Conference on Vehicle and Mechanical Engineering and Information Technology, VMEIT 2014 - Beijing, 中国
継続期間: 2 19 20142 20 2014

出版物シリーズ

名前Applied Mechanics and Materials
543-547
ISSN(印刷版)1660-9336
ISSN(電子版)1662-7482

その他

その他International Conference on Vehicle and Mechanical Engineering and Information Technology, VMEIT 2014
国/地域中国
CityBeijing
Period2/19/142/20/14

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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