期刊
JOURNAL OF HYDRODYNAMICS
卷 19, 期 6, 页码 690-697出版社
SPRINGER
DOI: 10.1016/S1001-6058(08)60005-0
关键词
side-by-side circular cylinder pair; unstructured spectral element method; numerical simulation; flow patterns; bifurcation
类别
资金
- National Natural Science Foundation of China [10432020, 10602056]
- Fund for Foreign Scholars in University Research and Teaching programs [B07033]
A flow past two side-by-side identical circular cylinders was numerically investigated with the unstructured spectral element method. From the computational results at various non-dimensional distances between cylinder centers T/D and the Reynolds number Re, a total of nine kinds of wake patterns were observed: four steady wake patterns, including single bluff-body steady pattern, separated double-body steady pattern and transition steady pattern for sub-critical Reynolds numbers and biased steady pattern for super-critical Reynolds numbers, and five unsteady wake patterns, including single bluff-body periodic pattern, biased quasi-steady pattern, quasi-periodic (flip-flopping) pattern, in-phase-synchronized pattern and anti-phase-synchronized pattern. Time evolution of lift and drag coefficients corresponding to each unsteady wake pattern was given.
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