Feedback control of bimodal wake dynamics

被引：53

作者：

Li, Ruiying ^{[1
]}

Barros, Diogo ^{[1
]}

Boree, Jacques ^{[1
]}

Cadot, Olivier ^{[4
]}

Noack, Bernd R. ^{[2
,3
]}

Cordier, Laurent ^{[1
]}

机构：

[1] Univ Poitiers, ISAE, ENSMA, Inst PPRIME,CNRS, F-86962 Futuroscope, France

[2] CNRS, LIMSI, UPR 3251, F-91405 Orsay, France

[3] Tech Univ Carolo Wilhelmina Braunschweig, D-38108 Braunschweig, Germany

[4] Univ Paris Saclay, EDF, CEA, IMSIA,ENSTA ParisTech,CNRS, F-91762 Palaiseau, France

来源：

EXPERIMENTS IN FLUIDS | 2016年 / 57卷 / 10期

关键词：

TURBULENT AXISYMMETRICAL WAKE; DRAG REDUCTION; BLUFF-BODY; MODES;

D O I：

10.1007/s00348-016-2245-2

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Feedback control is applied to symmetrize the bimodal dynamics of a turbulent blunt body wake. The flow is actuated with two lateral slit jets and monitored with pressure sensors at the rear surface. The physics-based controller is inferred from preliminary open-loop tests and is capable of symmetrizing the wake. A slight pressure recovery is achieved due to the net balance between the favourable effect of wake symmetrization and adverse effect of shear-layer mixing and vortex shedding amplification.

引用

页数：6

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