Magnetically actuated microvalve for active flow control

被引：11

作者：

Ducloux, Olivier ^{[1
]}

Talbi, Abdelkrim ^{[1
]}

Deblock, Yves ^{[1
]}

Gimeno, Leticia ^{[1
]}

Tiercelin, Nicolas ^{[1
]}

Pernod, Philippe ^{[1
]}

Preobrazhensky, Vladimir ^{[1
]}

Merlen, Alain ^{[1
]}

机构：

[1] Ecole Cent Lille, IEMN DOAE UMR CNRS 8520, LEMAC Lab Europeen MagnetoAcoust Non Lineaire, Cite Sci Av Poincarre, F-59652 Villeneuve Dascq, France

来源：

INTERNATIONAL MEMS CONFERENCE 2006 | 2006年 / 34卷

关键词：

Microvalve; Active flow control; Magnetic actuation; PDMS membrane;

D O I：

10.1088/1742-6596/34/1/104

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The reattachment of separated air flows can be actively controlled by blowing oscillatory air jets in the boundary layer, through submillimetric holes situated near the separation edge. To achieve such pulsed jets, a high flow rate, high actuation frequency microvalve was designed, fabricated and characterized. The microvalve is fed by a pressurized source of air, and its inner channel is alternatively pinched by a PDMS polymer membrane, modulating the air flow which is addressed towards the separated surface. Magnetostatic actuation was chosen for its high stress, high displacement, and remote actuation capabilities. The actuation consists in coupling an inductive driving coil and a NdFeB permanent magnet situated on the PDMS flexible membrane. Characterization of the resonance frequency, and vibration amplitude are achieved by interferometric means. The output flow is characterized using strioscopy visualization and hot wire anemometry methods. The design and fabrication process of the microsystem, and the results of these characterizations are presented in this paper.

引用

页码：631 / 636

页数：6

共 6 条

[1]

DUCLOUX O, 2005, P IEEE ULTR S 18 21

[2]

GILLARANZ JL, AIAA20010737

[3] The control of flow separation by periodic excitation [J].

Greenblatt, D ;

Wygnanski, IJ .

PROGRESS IN AEROSPACE SCIENCES, 2000, 36 (07) :487-545

[4] MEMS based transducers for boundary layer control [J].

Kumar, SM ;

Reynolds, WC ;

Kenny, TW .

MEMS '99: TWELFTH IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS, TECHNICAL DIGEST, 1999, :135-140

[5]

LEE GHC, 2003, SENSOR ACTUAT A-PHYS, V108, P168

[6] Poly(dimethylsiloxane) as a material for fabricating microfluidic devices [J].

McDonald, JC ;

Whitesides, GM .

ACCOUNTS OF CHEMICAL RESEARCH, 2002, 35 (07) :491-499

← 1 →