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CFD Events Calendar, Event Record #63

MEMS and Active Flow Control
An introduction into micro-machining technology and MEMS. A large overview of the state of art on MEMS based boundary flow control including real time distributed control.
Date: April 15, 2002 - April 19, 2002
Location: von Karman Institute, Belgium
Web Page:
Contact Email:
Organizer: von Karman Institute
Application Areas: Micro Electro Mechanical Systems
Deadlines: March 29, 2002 (registration)
Type of Event: Course, International


MEMS technology first emerged in the late 1980?s. It is based on miniaturised, integrated systems fabricated using techniques derived from integrated-circuit production. A micro-system incorporating transducers and logic circuitry is capable of sensing, signal processing and actuation. Initial developments were driven by automotive and medical applications. However, since the mid-nineties there has been a growing interest in the use of MEMS for aeronautical applications. The advantages of MEMS in miniaturisation, integration and batch fabrication promise to revolutionise flow control concepts through their ability for the non-intrusive detection of coherent flow structures and their modulation through adaptive wall changes, transpiration and heat transfer. Even more recently the gas turbine engine industry has shown a growing interest in the application of smart sensors and flow control based on MEMS technology.

The present lecture series is the first in Europe to be entirely devoted to the subject of MEMS and active flow control. It has been designed to enhance awareness of MEMS; to raise the interest of newcomers in this leading edge technology; to provide experienced fluid dynamists, already active in this field, with information on recent progress on flow control and to provide research managers with information to prepare decisions on future research and development strategies.

The first lectures in the series introduce MEMS and describe the most relevant fabrication processes supported with practical examples. The principles of MEMS operation, design and analysis are explained followed by a discussion of the fluid flow phenomena and models relevant to micro-devices. Subsequent lectures focus on specific aspects of flow control starting with current ideas and methods as well as futuristic strategies for the control of transition, turbulence and separation. The design, fabrication and operating characteristics of the most commonly used flow sensors and actuators are described through experiments, theory and modelling. Several lectures are then devoted to describing practical examples of the use of MEMS for the control of wall-bounded turbulence, boundary layer separation and wake development. The lecture series concludes with an outlook on the industrial perspectives of MEMS for active flow control. The lecturers are among the most renowned international experts in the field.

The co-Directors of this Lecture Series are Professor C.H. Sieverding of the von Karman Institute and Dr. C. Warsop of BAE SYSTEMS.


Monday 15 April 2002

08.45 Registration
09.00 Welcome, introductory remarks
09.30 Introduction to active control and MEMS
Dr. C. Warsop, BAE SYSTEMS, UK
11.00 MEMS micromachining processes
Prof. B. Puers, Katholieke U. Leuven, Belgium
14.00 MEMS micromachining processes (cont?d))
Prof. B. Puers
15.45 Principles of MEMS, design and analysis and overview of operating principles
Dr. C. Warsop
17.00 Welcome drink

Tuesday 16 April 2002

09.00 Flow physics in MEMS design and applications
Prof. M. Gad-el-Hak, U. of Notre Dame, USA
10.45 Flow physics in MEMS (cont?d)
Prof. M. Gad-el-Hak
14.00 Reactive flow control: a useful application of MEMS
Prof. M. Gad-el-Hak
15.45 Reactive flow control (cont?d)
Prof. M. Gad-el-Hak

Wednesday 17 April 2002

09.00 Design and fabrication of MEMS wall shear-stress and pressure sensors
Prof. L. Löfdahl, Chalmers U. of Techn.,Sweden
10.45 MEMS wall shear stress sensors: experiments, theory and modelling
Prof. L. Löfdahl
14.00 MEMS actuators for flow control: design, fabrication and performance
Prof. K. Breuer, Brown U., USA
15.45 Visit of VKI laboratories

Thursday 18 April 2002

09.00 MEMS actuators for flow control (cont?d)
Prof. K. Breuer
10.45 Applications to flow separation control
Dr. C. Warsop
14.00 Applications to the control of wall-bounded turbulence, including drag reduction
Prof. K. Breuer
15.45 Applications within turbomachinery
Prof. W. Ng, Virginia Polytechnic Institute, USA

Friday 19 April 2002

09.00 Applications within turbomachinery (cont?d)
Prof. W. Ng
10.45 An industrial perspective on the application of MEMS for active flow control
Dr. C. Warsop
12.15 Closure (Departure of VKI Bus around 14.00)
Event record first posted on February 19, 2002, last modified on April 3, 2002

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