Modeling of an IPMC Actuator-driven Zero-Net-Mass-Flux Pump for Flow Control

In this article, a systematic design method on an ionic polymer-metal composite (IPMC)-driven zero-net-mass-flux (ZNMF) pump is introduced for the flow control on a micro air vehicle ’s (MAV) wing. Since IPMC can generate a large deformation under a low input voltage along with its ability to operate in air, and its easier manufacture in a small size, it is considered to be an ideal material for the actuating diaphragm. Several parametric studies, using numerical methods, were performed to find an optimal shape of the diaphragm in order to maximize the stroke volume. Through these parametric studies, electrode shapes and pressure effects on the stroke volume were investigated. It was also found that the resonance of the normal mode analysis of the optimal circle-shaped diaphragm would not affect the stroke volume because the computed fundamental frequency is much higher than the considered driving frequency range (40 Hz). Based on the optimal circle-shaped diaphragm, a prototype ZNMF pump, with a slot, is designed for the flow control on an MAV wing. By using the flight speed of the MAV considered in this work and the flow velocity through the pump ’s slot, the calculated non-dimensional frequency and the momentum coefficient ensure the feasibility of the designed ZNMF pump as a flow control device.

[1]  Q. P. Ha,et al.  A piezoelectrically actuated micro synthetic jet for active flow control , 2003 .

[2]  Donald J. Leo,et al.  Ionic liquids as novel solvents for ionic polymer transducers , 2004, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[3]  Hoon Cheol Park,et al.  Design and demonstration of a biomimetic wing section using a lightweight piezo-composite actuator (LIPCA) , 2005 .

[4]  Frank Thiele,et al.  Numerical study of high-lift flow with separation control by periodic excitation , 2001 .

[5]  Tae Kang,et al.  Design and Flight Test of a Fixed Wing MAV , 2002 .

[6]  Donald J. Leo,et al.  Linear Electromechanical Model of Ionic Polymer Transducers -Part I: Model Development , 2003 .

[7]  Hyouk Ryeol Choi,et al.  Water uptake and migration effects of electroactive ion-exchange polymer metal composite (IPMC) actuator , 2005 .

[8]  Mohsen Shahinpoor,et al.  Ionic polymer–metal composites: III. Modeling and simulation as biomimetic sensors, actuators, transducers, and artificial muscles , 2004 .

[9]  Kwang J. Kim,et al.  Electromechanical flapping produced by ionic polymer-metal composites , 2004, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[10]  Duncan A. Lockerby,et al.  Numerical simulation of boundary-layer control using MEMS actuation , 2001 .

[11]  K. Kim,et al.  Ionic polymer–metal composites: II. Manufacturing techniques , 2003 .

[12]  Avi Seifert,et al.  Oscillatory Excitation of Unsteady Compressible Flows over Airfoils at Flight Reynolds Numbers , 1999 .

[13]  K Taleghani Barmac,et al.  Non-Linear Finite Element Modeling of THUNDER Piezoelectric Actuators , 1999 .

[14]  Sia Nemat-Nasser,et al.  Electromechanical response of ionic polymer-metal composites , 2000 .

[15]  S. G. Mallinson,et al.  The Interaction between a Compressible Synthetic Jet and a Laminar Hypersonic Boundary Layer , 2001 .

[16]  A. Seifert,et al.  Oscillatory Control of Separation at High Reynolds Numbers , 1999 .

[17]  Othon K. Rediniotis,et al.  Compact, High-Power Synthetic Jet Actuators for Flow Separation Control , 2001 .

[18]  Dorota Kral,et al.  Active Flow Control Technology , 1999 .

[19]  Donald J. Leo,et al.  Linear Electromechanical Model of Ionic Polymer Transducers -Part II: Experimental Validation , 2003 .

[20]  K. Kim,et al.  Ionic polymer-metal composites: I. Fundamentals , 2001 .