Global Stability of Fluid Flows Despite Transient Growth of Energy.
Global Stability of Fluid Flows Despite Transient Growth of Energy.
复制标题
尽管能量短暂增长,但流体流动的整体稳定性。
DOI:
10.1103/physrevlett.128.204502
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发表时间:
2022
影响因子:
8.6
通讯作者:
Fuentes F
中科院分区:
文献类型:
--
作者:
Fuentes F
Verifying nonlinear stability of a laminar fluid flow against all perturbations is a central challenge in fluid dynamics. Past results rely on monotonic decrease of a perturbation energy or a similar quadratic generalized energy. None show stability for the many flows that seem to be stable despite these energies growing transiently. Here a broadly applicable method to verify global stability of such flows is presented. It uses polynomial optimization computations to construct nonquadratic Lyapunov functions that decrease monotonically. The method is used to verify global stability of 2D plane Couette flow at Reynolds numbers above the the energy stability threshold found by Orr in 1907 [The stability or instability of the steady motions of a perfect liquid and of a viscous liquid. Part II: A viscous liquid, Proc. R. Ir. Acad. Sect. A 27, 69 (1907)]. This is the first global stability result for any flow that surpasses the energy method.
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影响因子:
4.6
作者:
F. Rincon
通讯作者:
F. Rincon
DOI:
10.1137/s0036141004442604
发表时间:
2005
期刊:
SIAM J. Math. Anal.
影响因子:
--
作者:
R. Kaiser;A. Tilgner;W. Wahl
通讯作者:
W. Wahl
DOI:
10.1137/1.9781611972290.ch3
发表时间:
2012
期刊:
SIAM J. Math. Anal.
影响因子:
--
作者:
P. Parrilo
通讯作者:
P. Parrilo
影响因子:
4.6
作者:
U. Ehrenstein;M. Nagata;F. Rincon
通讯作者:
F. Rincon
DOI:
10.4007/annals.2017.185.2.4
发表时间:
2015-11
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
J. Bedrossian;P. Germain;N. Masmoudi
通讯作者:
J. Bedrossian;P. Germain;N. Masmoudi