Abstract
The two- and three-dimensional wake structure behind a circular cylinder has been computed using a high-order spectral element technique. For the two-dimensional computations the predictions are compared with accurate experimental results and agree to within experimental uncertainty for the Strouhal number and base pressure coefficient. For the three-dimensional simulations, the two modes of three-dimensional instability, designated as modes A and B, both found experimentally but not previously computationally, have been captured. Mode A appears first at a Reynolds number slightly less than 200. As the Reynolds number is increased, there is a transfer of energy to mode B, which has a wavelength approximately one-fourth that of mode A.
| Original language | English |
|---|---|
| Pages (from-to) | 190-196 |
| Number of pages | 7 |
| Journal | Experimental Thermal and Fluid Science |
| Volume | 12 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Jan 1996 |
Keywords
- Bluff-body wakes
- Wake transition
Cite this
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Three-dimensional instabilities in the wake of a circular cylinder. / Thompson, Mark; Hourigan, Kerry; Sheridan, John.
In: Experimental Thermal and Fluid Science, Vol. 12, No. 2, 01.01.1996, p. 190-196.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Three-dimensional instabilities in the wake of a circular cylinder
AU - Thompson, Mark
AU - Hourigan, Kerry
AU - Sheridan, John
PY - 1996/1/1
Y1 - 1996/1/1
N2 - The two- and three-dimensional wake structure behind a circular cylinder has been computed using a high-order spectral element technique. For the two-dimensional computations the predictions are compared with accurate experimental results and agree to within experimental uncertainty for the Strouhal number and base pressure coefficient. For the three-dimensional simulations, the two modes of three-dimensional instability, designated as modes A and B, both found experimentally but not previously computationally, have been captured. Mode A appears first at a Reynolds number slightly less than 200. As the Reynolds number is increased, there is a transfer of energy to mode B, which has a wavelength approximately one-fourth that of mode A.
AB - The two- and three-dimensional wake structure behind a circular cylinder has been computed using a high-order spectral element technique. For the two-dimensional computations the predictions are compared with accurate experimental results and agree to within experimental uncertainty for the Strouhal number and base pressure coefficient. For the three-dimensional simulations, the two modes of three-dimensional instability, designated as modes A and B, both found experimentally but not previously computationally, have been captured. Mode A appears first at a Reynolds number slightly less than 200. As the Reynolds number is increased, there is a transfer of energy to mode B, which has a wavelength approximately one-fourth that of mode A.
KW - Bluff-body wakes
KW - Wake transition
UR - http://www.scopus.com/inward/record.url?scp=0030071995&partnerID=8YFLogxK
U2 - 10.1016/0894-1777(95)00098-4
DO - 10.1016/0894-1777(95)00098-4
M3 - Article
VL - 12
SP - 190
EP - 196
JO - Experimental Thermal and Fluid Science
JF - Experimental Thermal and Fluid Science
SN - 0894-1777
IS - 2
ER -