IUTAM Symposium on Flow Control and MEMS: Proceedings of the IUTAM Symposium held at the Royal Geographical Society, 19–22 September 2006, hosted by Imperial College, London, England

Front Matter....Pages i-xv
Front Matter....Pages 1-1
High Power Density MEMS: Materials and Structures Requirements....Pages 3-13
MEMS for Flow Control: Technological Facilities and MMMS Alternatives....Pages 15-24
MEMS-Based Electrodynamic Synthetic Jet Actuators for Flow Control Applications....Pages 25-32
Suction and Oscillatory Blowing Actuator....Pages 33-44
Numerical Investigation of a Micro-Valve Pulsed-Jet Actuator....Pages 45-51
Characterization of MEMS Pulsed Micro-Jets with Large Nozzles....Pages 53-58
Magnetically Actuated Microvalves for Active Flow Control....Pages 59-65
Micromachined Shear Stress Sensors for Flow Control Applications....Pages 67-73
Front Matter....Pages 75-75
Synthetic Jets and Their Applications for Fluid/Thermal Systems....Pages 77-93
Is Helmholtz Resonance a Problem for Micro-Jet Actuators?....Pages 95-101
Passive Scalar Mixing Downstream of a Synthetic Jet in Crossflow....Pages 103-109
Towards a Practical Synthetic Jet Actuator for Industrial Scale Flow Control Applications....Pages 111-118
Measurements of Synthetic Jets in a Boundary Layer....Pages 119-125
Large-Eddy Simulations of Synthetic Jets in Stagnant Surroundings and Turbulent Cross-Flow....Pages 127-134
Characteristics of Small-Scale Synthetic Jets — Numerical Investigation....Pages 135-140
Large Eddy Simulations of Transitional and Turbulent Flows in Synthetic Jet Actuators....Pages 141-144
Front Matter....Pages 145-145
Model Reduction and Control of a Cavity-Driven Separated Boundary Layer....Pages 147-155
Collaborative Studies on Flow Separation Control....Pages 157-166
High Resolution PIV Study of Zero-Net-Mass-Flow Lift Enhancement of NACA 0015 Airfoil at High Angles of Attack....Pages 167-173
Separation Control along a NACA 0015 Airfoil Using a Dielectric Barrier Discharge Actuator....Pages 175-181
Front Matter....Pages 145-145
Dynamic Surface Pressure Based Estimation for Flow Control....Pages 183-189
The Control of Laminar Separation Bubbles Using High- and Low-Amplitude Forcing....Pages 191-197
Control of Subsonic Flows with High Voltage Discharges....Pages 199-202
Control of Flow Separation on a Wing Profile Using PIV Measurements and POD Analysis....Pages 203-207
Control of the Shear-Layer in the Wake of an Axisymmetrical Airfoil Using a DBD Plasma Actuator....Pages 209-215
Front Matter....Pages 217-217
Models for Adaptive Feedforward Control of Turbulence....Pages 219-227
Minimum Sustainable Drag for Constant Volume-Flux Pipe Flows....Pages 229-235
Enhancement of Suboptimal Controllability in Wall Turbulence....Pages 237-242
An Improvement of Opposition Control at High Reynolds Numbers....Pages 243-249
Direct Numerical Simulation of Alternated Spanwise Lorentz Forcing....Pages 251-257
Boundary Layer Control for Drag Reduction by Lorentz Forcing....Pages 259-265
Multi-Scale Flow Control for Efficient Mixing: Laboratory Generation of Unsteady Multi-Scale Flows Controlled by Multi-Scale Electromagnetic Forces....Pages 267-272
Multi-Scale Flow Control for Efficient Mixing: Simulation of Electromagnetically Forced Turbulent-Like Laminar Flows....Pages 273-277
Front Matter....Pages 279-279
Active Control of Laminar Boundary Layer Disturbances....Pages 281-292
Low-Dimensional Tools for Closed-Loop Flow-Control in High Reynolds Number Turbulent Flows....Pages 293-310
Evolutionary Optimization of Feedback Controllers for Thermoacoustic Instabilities....Pages 311-317
Active Cancellation of Tollmien-Schlichting Instabilities in Compressible Flows Using Closed-Loop Control....Pages 319-331
Optimal Boundary Flow Control: Equivalence of Adjoint and Co-State Formulations and Solutions....Pages 333-337
Optimal Growth of Linear Perturbations in Low Pressure Turbine Flows....Pages 339-343
Simulations of Feedback Control of Early Transition in Poiseuille Flow....Pages 345-348
Front Matter....Pages 279-279
A Switched Reduced-Order Dynamical System for Fluid Flows under Time-Varying Flow Conditions....Pages 349-352
Strategies for Optimal Control of Global Modes....Pages 353-357
Front Matter....Pages 359-359
Modeling and Development of Synthetic Jet Actuators in Flow Separation Control Application....Pages 361-364
Feedback Control Using Extremum Seeking Method for Drag Reduction of a 3D Bluff Body....Pages 365-372
Flow Control in Turbomachinery Using Microjets....Pages 373-380
ONERA/IEMN Contribution within the ADVACT Program: Actuators Evaluation....Pages 381-386
Control of Flow-Induced Vibration of Two Side-by-Side Cylinders Using Micro Actuators....Pages 387-391
Improvement of the Jet-Vectoring through the Suppression of a Global Instability....Pages 393-396
Front Matter....Pages 397-397
Experimental Optimization of Bionic Dimpled Surfaces on Axisymmetric Bluff Bodies for Drag Reduction....Pages 399-403
Flow Regularisation and Drag Reduction around Blunt Bodies Using Porous Devices....Pages 405-408
The Effects of Aspect Ratio and End Condition on the Control of Free Shear Layers Development and Force Coefficients for Flow Past Four Cylinders in the In-line Square Configuration....Pages 409-413
Numerical Simulation on the Control of Drag Force and Vortex Formation by Different Wavy (Varicose) Cylinders....Pages 415-419
Passive Multiscale Flow Control by Fractal Grids....Pages 421-425
Hydraulic Model of the Skin Friction Reduction with Surface Grooves....Pages 427-431
Vortex Shedding behind a Tapered Cylinder and Its Control....Pages 433-436
Control of a Separated Flow over a Smoothly Contoured Ramp Using Vortex Generators....Pages 437-441
Biomimetic Flight and Flow Control: Learning from the Birds....Pages 443-447
Back Matter....Pages 449-454