Symmetry breaking perturbative flows to retrieve resonant modes in plane shear layers

Symmetry breaking perturbative flows to retrieve resonant modes in plane shear layers
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打破扰动流的对称性以检索平面剪切层中的共振模式

DOI:
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发表时间:
2015
期刊:
arXiv: Fluid Dynamics
影响因子:
--
通讯作者:
S. Generalis
S. Generalis
中科院分区:
--
文献类型:
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作者:
T. Akinaga;T. Itano;S. Generalis

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我们提出了一个简单的计算程序,以解决简并性,这是必然存在的背景下的流体运动与一个无限范围的通道。应用该方法,在加入微扰泊泽维尔流分量的情况下,对侧向加热流的分岔结构进行了分析。引入对称破缺微扰作为最简单的缺陷改变了原始剪切流的分岔树。结果发现了以前未知的无扰动流的高阶非线性解,而无需采用经典的稳定性理论。
We propose a simple computational procedure in order to resolve the degeneracy, which invariably exists on the background of fluid motion associated with a channel of infinite extent. The procedure is applied to elucidate the bifurcation structure for the particular case of laterally heated flow with the addition of a perturbative Poiseuille flow component. The introduction of a symmetry breaking perturbation as the simplest imperfection alters the bifurcation tree of the original shear flow. As a result, the previously unknown higher order nonlinear solutions for the unperturbed flow are discovered, without implementing classical stability theory.
平面库埃特流中的发夹涡解:结涡的挂毯
DOI: --
发表时间: 2009
期刊: Phys. Rev. Lett. Vol.102
影响因子: --
作者:
Itano;T.;Generalis;S.C.
通讯作者: S.C.
DOI: 10.1143/jpsj.78.084401
发表时间: 2009
影响因子: 1.7
作者:
Gyoko Nagayama;Kosuke Yanai;Takaharu Tsuruta;S. C. Generalis and K. Fujimura
通讯作者: S. C. Generalis and K. Fujimura