Phase jump and energy transfer of forced oscillating circular cylinder in uniform flow
Phase jump and energy transfer of forced oscillating circular cylinder in uniform flow
复制标题
均匀流中受迫振荡圆柱体的相跳与能量传递
DOI：
10.1177/1475090216656950
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发表时间：
2017-05
期刊：
影响因子：
--
通讯作者：
Zhi Zong
中科院分区：
文献类型：
--
作者：
Guoqiang Tang;Lin Lu;Ming Zhao;Mingming Liu;Zhi Zong
数值研究了雷诺数为200时圆柱体在均匀来流方向上受迫振荡时的相跳、能量传递和相关的涡脱落模式。研究了流体力与无量纲振幅A* = A/D ∈ [0.1，0.6]和频率f* = fe/fs ∈ [0.5，2.0]的关系，其中A为振幅，D为圆柱直径，fe为圆柱振动频率，fs为相同雷诺数下固定圆柱的Strouhal频率。利用傅里叶分析和李萨如相图相结合的方法确定了锁定区。讨论了位移脉动和升力脉动之间的相位差以及流体与结构之间的能量传递。在锁定区域内，发现在A* = 0.5和0.55的情况下，在没有尾流模式转变的情况下，相位差发生跳跃。数值结果表明，相位跃变的出现与能量传递方向的反转相一致。对于A* = 0.5和0.55的特殊情况，观察到能量转移的符号的变化，而在其他振幅下没有观察到能量转移的反转。当A* ∈ [0.1，0.4]时，能量传递方向为流体向圆柱的方向，当A* ≥ 0.6时，能量传递方向为圆柱向流体的方向。研究表明，流体与缸筒之间的能量传递不仅与缸筒振动频率有关，而且与缸筒振动振幅有关。
The phase jump, energy transfer, and the associated vortex shedding modes of a circular cylinder undergoing forced oscillation normal to the incoming uniform flow are investigated numerically at Reynolds number (Re) of 200. The dependence of the fluid forces on the non-dimensional oscillating amplitude A* = A/D ∈ [0.1, 0.6] and frequency f* = fe/fs ∈ [0.5, 2.0] is examined, where A is the oscillating amplitude, D is the cylinder diameter, fe is the cylinder oscillating frequency, and fs is the Strouhal frequency of fixed cylinder at the same Reynolds number, respectively. The lock-in region is identified by the combination of Fourier analysis and Lissajous phase diagram. The phase difference between displacement and lift fluctuation and the energy transfer between fluid and structure are discussed. Within the lock-in region, a jump in the phase difference is found to occur in the cases with A* = 0.5 and 0.55 without a wake mode transition. The numerical results reveal that the appearance of the phase jump is consistent with the reversal of the energy transfer direction. For the special cases of A* = 0.5 and 0.55, changes in the sign of energy transfer are observed, while no reversal of energy transfer is observed at other amplitudes. The energy transfer direction is either from fluid to cylinder when A* ∈ [0.1, 0.4] or from cylinder to fluid when A* ≥ 0.6. It is confirmed that the energy transfer between fluid and cylinder is not only dependent on cylinder oscillating frequency but also on cylinder oscillating amplitude.
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影响因子：
4.1
作者：
He, JW;Glowinski, R;Periaux, J
通讯作者：
Periaux, J
影响因子：
2
作者：
O. Griffin;M. Hall
通讯作者：
O. Griffin;M. Hall
DOI：
10.1007/bf02983592
发表时间：
2003-11
期刊：
KSME International Journal
影响因子：
--
作者：
Minhyung Lee;Sung-Yeoul Lee
通讯作者：
Minhyung Lee;Sung-Yeoul Lee
影响因子：
3.6
作者：
L. Kaiktsis;G. Triantafyllou;M. Özbaş
通讯作者：
L. Kaiktsis;G. Triantafyllou;M. Özbaş
DOI：
10.1137/0913035
发表时间：
1992-03-01
期刊：
SIAM JOURNAL ON SCIENTIFIC AND STATISTICAL COMPUTING
影响因子：
--
作者：
VANDERVORST, HA
通讯作者：
VANDERVORST, HA