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Numerical simulation of the flow around a circular cylinder based on IDDES-Tr model at high subcritical Reynolds number
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Fa-ming WU1, 2, Meng JI1, Pan-pan HAN1, Xiao-ping QIU3, Qiao MA3, Yun-xiang YOU1, 2, Kai-jian WU3
Journal of Ship Mechanics | 2026, 30(1) : 32 - 40
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Journal of Ship Mechanics | 2026, 30(1): 32-40
• Hydrodynamics •
Numerical simulation of the flow around a circular cylinder based on IDDES-Tr model at high subcritical Reynolds number
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Fa-ming WU1, 2, Meng JI1, Pan-pan HAN1, Xiao-ping QIU3, Qiao MA3, Yun-xiang YOU1, 2, Kai-jian WU3
Affiliations
  • 1.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • 2.Yazhou Bay Institute of Deepsea Technology, Shanghai Jiao Tong University, Sanya 572000, China
  • 3.Shanghai Junyu Information Technology Limited, Shanghai 201800, China
Published: 2026-01-15 doi: 10.3969/j.issn.1007-7294.2026.01.004
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At high subcritical Reynolds numbers, the flow past the circular cylinder has two types of complex flow phenomena, namely massive separation flow and shear layer transition. The traditional Improved Detached Eddy Simulation method (IDDES) is based on a fully turbulent assumption and is not suitable for dealing with transition. Meanwhile, the transition models (TRANS) based on the RANS method are incompetent to simulate the three-dimensional turbulent structure caused by massive separation. Therefore, this article integrates the IDDES approach with the TRANS model to develop an IDDES-Tr model capable of simultaneously resolving massive flow separation and shear layer transition. Numerical simulations were conducted for flow around a cylinder at a high subcritical Reynolds number of Re=1.4×105, with results subsequently validated against experimental data. The comparison demonstrates a strong agreement between the simulation and experimental data, indicating that the IDDES-Tr model accurately captures the features of flow around a cylinder at high subcritical Reynolds numbers. In other words, the new model can effectively simulate simultaneously massive separation and shear layer transition.

massive separation  /  transition  /  IDDES-Tr  /  high subcritical Reynolds number  /  flow around a cylinder
Fa-ming WU, Meng JI, Pan-pan HAN, Xiao-ping QIU, Qiao MA, Yun-xiang YOU, Kai-jian WU. Numerical simulation of the flow around a circular cylinder based on IDDES-Tr model at high subcritical Reynolds number[J]. Journal of Ship Mechanics, 2026 , 30 (1) : 32 -40 . DOI: 10.3969/j.issn.1007-7294.2026.01.004
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doi: 10.3969/j.issn.1007-7294.2026.01.004
  • Receive Date：2025-05-28
  • Online Date：2026-07-07
  • Published：2026-01-15
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  • Received：2025-05-28
Affiliations
    1.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    2.Yazhou Bay Institute of Deepsea Technology, Shanghai Jiao Tong University, Sanya 572000, China
    3.Shanghai Junyu Information Technology Limited, Shanghai 201800, China
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红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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