JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A numerical study of vortex shedding and lock-on behind a square cylinder in a laminar flow
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A numerical study of vortex shedding and lock-on behind a square cylinder in a laminar flow
Jeong, Yeong-Jong; Jo, Sang-Hyeon; Choe, Hae-Cheon; Gang, Sin-Hyeong;
  PDF(new window)
 Abstract
Effects of the oscillating incoming flow on vortex shedding and lock-on behind a square cylinder are investigated using numerical simulations at a Reynolds number of 100. Vortex shedding occurred at low forcing frequencies of the incoming flow similar to the natural vortex shedding. As the forcing frequency further increases, the shedding frequency decreases to the half of the forcing freqnency. For a sufficiently large frequency, vortex shedding returns to the natural vortex shedding irrespective of the forcing amplitude. Also, the lock-on region becomes wider with higher forcing amplitudes. The phase diagram between the drag and lift shows a simple periodic behavior in the lock-on region, while a complicated periodic phase relation is observed when there is no lock-on.
 Keywords
 Language
Korean
 Cited by