Flow-distributed oscillation, flow-velocity modulation, and resonance.

Flow-distributed oscillation, flow-velocity modulation, and resonance.
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流量分布振荡、流速调制和共振。

DOI:
10.1103/physreve.72.027202
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发表时间:
2005
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
通讯作者:
M. Menzinger
M. Menzinger
中科院分区:
--
文献类型:
--
作者:
P. McGraw;M. Menzinger

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我们研究了周期性变化的流速对由流量分布振荡机制形成的驻波和行波图案的影响。在运动学(或无扩散)极限下,相锋经历简单的时空周期性纵向位移。另一方面,当扩散是显着的,周期性调制的速度可以扰乱波的图案,在下游区域产生行波的频率是一个合理的倍数的速度扰动频率。我们观察到频率锁定的比例为1:1,2:1和3:1,这取决于速度调制的幅度和频率。这种现象可以被看作是一种新的,相当微妙的共振强迫类型。
We examine the effects of a periodically varying flow velocity on the standing- and traveling-wave patterns formed by the flow-distributed oscillation mechanism. In the kinematic (or diffusionless) limit, the phase fronts undergo a simple, spatiotemporally periodic longitudinal displacement. On the other hand, when the diffusion is significant, periodic modulation of the velocity can disrupt the wave pattern, giving rise in the downstream region to traveling waves whose frequency is a rational multiple of the velocity perturbation frequency. We observe frequency locking at ratios of 1:1, 2:1, and 3:1, depending on the amplitude and frequency of the velocity modulation. This phenomenon can be viewed as a novel, rather subtle type of resonant forcing.
H、K 和 Ca2 的脉动流入滞后于百合花粉管的生长脉冲。
DOI: 10.1242/jcs.112.10.1497
发表时间: 1999
影响因子: 4
作者:
Messerli,MA;Danuser,G;Robinson,KR
通讯作者: Robinson,KR