Vortex Motions and Forces about a Horizontal Cylinder Advancing beneath the Waves
نویسندگان
چکیده
منابع مشابه
Streamwise oscillations of a cylinder beneath a free surface: Free surface effects on fluid forces
A two-dimensional free surface flow past a circular cylinder forced to performstreamwise oscillations in the presence of an oncoming uniform flow is investigated at a Reynolds number of R = 200 and fixed displacement amplitude, A = 0.13, for the forcing frequency-to-natural shedding frequency ratios, f/f0 = 1.5, 2.5, 3.5. This study is based on numerical solutions of the special integral form o...
متن کاملVortex Dynamics on a Cylinder
Spatially periodic rows of point vortices in a 2-dimensional ideal fluid have long attracted the attention of fluid dynamicists, one of the earliest and the most popular instances being Kármán’s vortex street [6], [15, photos 94–98]. The general problem is as follows: analyse the motion of an infinite configuration consisting of vortices z1, . . . , zN ∈ C with vorticities Γ1, . . . ,ΓN ∈ R tog...
متن کاملSinking of a horizontal cylinder.
We study the sinking of a dense cylinder initially supported horizontally at an air-water interface and then released. The sinking motion is studied experimentally and agrees quantitatively with a simple hydrodynamic model of the process. In particular, our model predicts that the time taken for the cylinder to become immersed in the liquid should be tsink approximately theta((lc/g)1/2), where ...
متن کاملThermal Field Around a Circular Cylinder with Periodic Vortex Shedding
A numerical study is carried out to investigate the laminar forced convection heat transfer from a circular cylinder. The fluid is assumed to be incompressible, the Reynolds number ranged from 0.1 to 1000, and the Prandtl number was equal to 0.7. The range of study includes heat transfer in creeping flow (Re40). The equations were discretized by a control-volume-based finite difference techniqu...
متن کاملLongitudinal vortex structures in a cylinder wake
Recently, flow visualizations by Wei and Smith,’ Williamson,’ Welsh et a1.,3 and Bays-Muchmore and Ahmed4 have shown that three-dimensional (3-D) vertical structures develop in the wake of a bluff body. The 3-D vertical structures were found to include pairs of counterrotating longitudinal vortices superimposed on the nominally two-dimensional (2-D) Kirmin vortex street as speculated by Grant’ ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Society of Naval Architects of Japan
سال: 1991
ISSN: 1884-2070,0514-8499
DOI: 10.2534/jjasnaoe1968.1991.170_253