Wind and Structures

  • 제29권1호
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  • Pages.1-13
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  • 2019
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Forces and flow around three side-by-side square cylinders

  • Zheng, Qinmin (Institute for Turbulence-Noise-Vibration Interaction and Control, Harbin Institute of Technology) ;
  • Alam, Md. Mahbub (Institute for Turbulence-Noise-Vibration Interaction and Control, Harbin Institute of Technology) ;
  • Rehman, S. (Center for Engineering Research, Research Institute, King Fahd University of Petroleum and Minerals) ;
  • Maiti, D.K. (Department of Applied Mathematics with Oceanology and Computer Programming Vidyasagar University)
  • 투고 : 2018.09.07
  • 심사 : 2019.02.28
  • 발행 : 2019.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

A numerical investigation on forces and flow around three square cylinders in side-by-side arrangement is conducted at a Reynolds number Re = 150 with the cylinder center-to-center spacing ratio L/W = 1.1 ~ 9.0, where W is the cylinder side width. The flowat this Re is assumed to be two-dimensional, incompressible, and Newtonian. The flow simulation is conducted by using ANSYS-Fluent. The flow around the three side-by-side cylinders entails some novel flow physics, involving the interaction between the gap and free-stream side flows as well as that between the two gap flows. An increase in L/W from 1.1 to 9.0 leads to five distinct flow regimes, viz., base-bleed flow (L/W < 1.4), flip-flopping flow (1.4 < L/W < 2.1), symmetrically biased beat flow (2.1 < L/W < 2.6), non-biased beat flow (2.6 < L/W < 7.25) and weak interaction flow (7.25 < L/W < 9.0). The gap flow behaviors, time-averaged and fluctuating fluid forces, time-averaged pressure, recirculation bubble, formation length, and wake width in each flow regime are discussed in detail.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Council of Shenzhen

참고문헌

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피인용 문헌

  1. Wind loads and wind-resistant behaviour of large cylindrical tanks in square-arrangement group. Part 2: CFD simulation and finite element analysis vol.31, pp.6, 2019, https://doi.org/10.12989/was.2020.31.6.495