Browsing NTNU Open by Author "Tian, Cai"

Now showing items 1-10 of 10

    • Coexistence of natural and forced vortex dislocations in step cylinder flow 

      Tian, Cai; Zhu, Jianxun; Holmedal, Lars Erik (Journal article; Peer reviewed, 2023)

    • Diameter ratio effects in the wake flow of single step cylinders 

      Tian, Cai; Jiang, Fengjian; Pettersen, Bjørnar; Andersson, Helge Ingolf (Peer reviewed; Journal article, 2020)
      Vortex interactions behind step cylinders with diameter ratio 2 ≤ D/d ≤ 3 at Reynolds number (ReD) 150 were investigated by directly solving the three-dimensional Navier–Stokes equations. In accordance with the previous ...

    • Different topologies of natural vortex dislocations in Mode A wake 

      Tian, Cai; Shi, Zhaoyu; Jiang, Fengjian; Andersson, Helge Ingolf (Journal article; Peer reviewed, 2022)

    • Effect of the angle of attack on flow around an elliptic cylinder near a moving wall 

      Zhu, Jianxun; Holmedal, Lars Erik; Tian, Cai (Journal article; Peer reviewed, 2022)
      The present work investigates the combined effect of the angle of attack (AOA) (the angle between the semi-major axis of the cylinder and the vertical axis), and the gap ratio G/D (where G represents the distance between ...

    • Flow over a single shallow dimple 

      Zhu, Jianxun; Tian, Cai; Holmedal, Lars Erik (Peer reviewed; Journal article, 2024)

    • How vortex dynamics affects the structural load in step cylinder flow 

      Tian, Cai; Zhu, Jianxun; Holmedal, Lars Erik; Andersson, Helge; Jiang, Fengjian; Pettersen, Bjørnar (Journal article; Peer reviewed, 2023)
      The vortex dynamics and the structural load in a step cylinder (consisting of a small, d, and a large, D, cylinder) flow are investigated numerically at Reynolds number (ReD) 150 for diameter ratios D/d=2.0,2.4 and 2.8. ...

    • NUMERICAL INVESTIGATION OF FLOW AROUND INTERSECTING CYLINDERS 

      Tian, Cai (Master thesis, 2016)
      Recent years interfering effects in the wake of bluff body are drawing more attention, especially for the intersecting cylinders. The structures with the similar shape of the intersecting cylinder are used in many industrial ...

    • Numerical Studies of Viscous Flow Around Step Cylinders 

      Tian, Cai (Doctoral theses at NTNU;2021:122, Doctoral thesis, 2021)
      A step cylinder consists of a small diameter cylinder (d) attached coaxially to a large diameter cylinder (D). Structures with a similar shape as the step cylinder have been extensively used in many marine engineering ap- ...

    • Vortex dislocation mechanisms in the near wake of a step cylinder 

      Tian, Cai; Jiang, Fengjian; Pettersen, Bjørnar; Andersson, Helge Ingolf (Peer reviewed; Journal article, 2020)
      Vortex interactions behind step cylinders with diameter ratio D/d = 2 and 2.4 at Reynolds number ( ReD ) 150 were investigated by directly solving the three-dimensional Navier–Stokes equations. In accordance with previous ...

    • Vortex system around a step cylinder in a turbulent flow field 

      Tian, Cai; Jiang, Fengjian; Pettersen, Bjørnar; Andersson, Helge Ingolf (Peer reviewed; Journal article, 2021)
      The vortex system around the step surface of a step cylinder with a diameter ratio D/d=2 at Reynolds number (ReD) 3900 was investigated by directly solving the three-dimensional Navier–Stokes equations. Formation mechanisms ...