tramp什么意思
A numerical study of an inline oscillating cylinder in
a free stream
经典英文歌曲期刊名称： Journal of Fluid Mechanics
石家庄学院怎么样作者： Leontini, Justin S., Lo Jacono, David, Thompson, Mark C.
年份： 2011年
paul期号： 第1期
大学生穿衣关键词： pattern formation; vortex shedding; vortex streets
语言转换>42所双一流大学
pwi摘要：Simulations of a cylinder undergoing externally controlled sinusoidal oscillations in the free stream direction have been performed. The frequency of oscillation was kept equal to the vortex shedding frequency from a fixed cylinder, while the amplitude of oscillation was varied, and the respon of the flow measured. With varying amplitude, a rich ries of dynamic respons was record
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ed. With increasing amplitude, the states included wakes similar to the Kármánvortex street, quasiperiodic oscillations interleaved with regions of synchronized periodicity (periodic on multiple oscillation cycles), a period-doubled state and chaotic oscillations. It is hypothesized that, for low to moderate amplitudes, the wake dynamics are controlled by vortex shedding at a global frequency, modified
by the oscillation. This vortex
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