Vortex-induced vibration and wake interference of two-degree-of-freedom elastically mounted elliptical cylinders in tandem at various spacing

Ocean Engineering, Год журнала: 2024, Номер 310, С. 118637 - 118637

Опубликована: Июль 8, 2024

Язык: Английский

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Hydrodynamics investigation of a three-dimensional fish swimming in oblique flows by a ghost cell method

Physics of Fluids, Год журнала: 2024, Номер 36(11)

Опубликована: Ноя. 1, 2024

Fish in nature can encounter various flow environments. This paper numerically simulated a 3D (three-dimensional) carangiform fish swimming oblique flow. The numerical model adopts robust ghost cell method with graphics processing unit acceleration. dynamic performance and the wake evolutions are discussed under different Strouhal numbers attack angles. It is found that thrust along direction would get enhanced more energy consumption as number (St) rises. angle similar but less significant effect. Also, stall of θ = 40° approximately determined, which independent number. However, flexible deformation reduce adverse effects stall. In terms structures, they transitioned from two rows vortex streets at St 0.2 to three 0.6, even four 1. connected ring induced by undulating caudal fin contributes lateral forces dominantly. As rises, transformed typical von Karman reverse one, indicating generation thrust. slender, parallel contrails caused detachment leading-edge vortices (LEVs), induce high-order harmonic components force coefficients. rings grows number, while it hardly affected angle. grows, turned disconnected hairpin intertwined losses spanwise symmetry. Moreover, reattachment LEV not observed after

Язык: Английский

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Numerical investigation on vortex-induced vibration of vertically suspended multilayer cables subjected to nonlinear shear flow

Ocean Engineering, Год журнала: 2024, Номер 313, С. 119457 - 119457

Опубликована: Окт. 30, 2024

Язык: Английский

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Computational Investigation of Vortex-Induced Oscillation of Two Side-by-Side Cylinders at High Reynolds Numbers

European Journal of Mechanics - B/Fluids, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Язык: Английский

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