Rearrangement of vortex street in the wake behind a two-dimensional body.

Okude, Muneshige; Matsui, Tatsuya

doi:10.2322/jjsass1969.36.498

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is no indication that this ratio is close to 2 for a wide range • -599 Taneda (1959) yielded the data roughly expressed by a dotted-broken line in Fig. 3(b), whereas Matsui and Okude (1980) and Okude (1981) obtained the result denoted by a broken line. Both of them show a decrease, similar to ours, in the ratio «J«, with increasing R. The ratio measured by Cimbala et al (1988) is also shown by crosses.…”

Section: Geometrical Configuration Of Visualized Flowfield In Series ...mentioning

confidence: 88%

“…This result suggests another problem in the vortex-pairing scenario because the expected ratio is FdF 2 = 2. Matsui and Okude (1980) and Okude (1981) measured the frequencies of the velocity fluctuations in the primary and secondary vortex streets. They also obtained the linear dependences of F, and F 2 on R. As found from Fig.…”

Section: Geometrical Configuration Of Visualized Flowfield In Series ...mentioning

confidence: 99%

See 1 more Smart Citation

Evolution of a vortex street in the far wake of a cylinder

Karasudani

Funakoshi

1994

Fluid Dyn. Res.

View full text Add to dashboard Cite

The evolution of a primary vortex street shed from a circular cylinder in the far wake is experimentally examined for 70 < R < 154 (R is the Reynolds number). According to the vorticity fields obtained using digital image processing for visualized flow fields, the primary vortex street breaks down into a nearly parallel shear flow of Gaussian profile at a certain downstream distance, before a secondary vortex street of larger scale appears further downstream. The process leading to the nearly parallel flow can be explained as the evolution of the vortex regions of an inviscid fluid if we invoke the observation that the distance between the two rows in the primary vortex street increases with the downstream distance, although the viscous effect probably contributes to this increase. Numerical computations with the discrete vortex method also support this explanation. The wavelengths and speeds of the primary and secondary vortex street are also measured.

show abstract

Section: Geometrical Configuration Of Visualized Flowfield In Series ...mentioning

confidence: 88%

Section: Geometrical Configuration Of Visualized Flowfield In Series ...mentioning

confidence: 99%