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

Abstract

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.

Keywords

IPMC diaphragm zero-net-mass-flux pump stroke volume flow control

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References

Bennett, M. and Leo, D.L. 2004. ‘ ‘Ionic Liquids as Novel Solvents for Ionic Polymer Transducers,” In: Proceedings of 2004 SPIE-Smart Structures and Materials, Vol. 5385, pp. 210-220 .

Gilarranz, J.L. and Rediniotis, O.K. 2001. ‘ ‘Compact, High-power Synthetic Jet Actuators for Flow Separation Control,” AIAA Paper 2001-0737, 39th Aerospace Sciences Meeting and Exhibit, January 2001, Reno, Nevada.

Hwang, H.C. , Chung, D.K. , Yoon, K.J. , Park, H.C. , Lee, Y.J. and Kang, T.S. 2002. ‘ ‘Design and Flight Test of a Fixed Wing MAV,” AIAA Paper 2002-3413, AIAA ’s 1st Conference and Workshop on Unmanned Aerospace Vehicles, Systems, Technologies, and Operations, Portsmouth, Virginia.

Kim, K.J. and Shahinpoor, M. 2003. “Ionic Polymer-metal Composites: II. Manufacturing Techniques,” Smart Materials and Structures, 12(1): 65-79 .

Kral, L.D. 2000. ‘ ‘Active Flow Control Technology,” ASME Fluids Engineering, Technical Brief .

Lee, C. , Hong, G. , Ha, Q.P. and Mallinson, S.G. 2003. “A Piezoelectrically Actuated Micro Synthetic Jet for Active Flow Control,” Sensors and Actuators A, 108(1-3): 168-174 .

Lee, S. , Park, H.C. , Kim, K.J. and Yoon, K.J. 2004. Equivalent Beam and Equivalent Bimorph Beam Models for Ionic Polymer-metal Composite Actuators , Journal of Control, Automation, and Systems Engineering (in Korean), 10(11): 1012-1016 .

Lim, S.M. , Lee, S. , Park, H.C. , Yoon, K.J. and Goo, N.S. 2005. “Design and Demonstration of a Biomimetic Wing Section using a Lightweight Piezo-composite Actuator (LIPCA),” Smart Materials and Structures, 14(4): 496-503 .

Lockerby, D. 2001. “Numerical Simulation of Boundary-layer Control using MEMS Actuation,” PhD Thesis, The University of Warwick, UK.

10.

Mallinson, S.G. , Reizes, J.A. and Hillier, R. 2001. “The Interaction between a Compressible Synthetic Jet and a Laminar Hypersonic Boundary Layer,” Flow, Turbulence and Combustion, 66(1): 1-21 .

11.

MSC.Software Corp., 2001. MSC/NASTRAN User ’s Manual.

12.

Nam, J.D. , Lee, J.H. , Lee, J.H. , Choe, H. , Kim, K.J. and Tak, Y.S. 2005. “Water Uptake and Migration Effects of Electroactive IPMC(Ion-exchange Polymer Metal Composite) Actuator,” Sensors and Actuators A: Physical, 118(1): 98-106 .

13.

Nemat-Nasser, S. and Li, J.Y. 2000. “Electromechanical Response of Ionic Polymer-metal Composites,” Journal of Applied Physics, 87(7): 3321-3331 .

14.

Newbury, K.M. and Leo, D.J. 2003a. Linear Electromechanical Model of Ionic Polymer Transducers - Part I: Model Development , Journal of Intelligent Material Systems and Structures, 14(6): 333-342 .

15.

Newbury, K.M. and Leo, D.J. 2003b. Linear Electromechanical Model of Ionic Polymer Transducers - Part II: Experimental Validation , Journal of Intelligent Material Systems and Structures, 14(6): 343-357 .

16.

Park, H.C. , Kim, K.J. , Lee, S. and Chah, Y.J. 2004. ‘ ‘Electromechanical Flapping Produced by Ionic Polymer-metal Composites,” In: SPIE 11th Annual International Symposium on Smart Structures and Materials, Paper 5385-63.

17.

Schatz, M. and Thiele, F. 2001. ‘ ‘Numerical Study of High-lift Flow with Separation Control by Periodic Excitation,” AIAA Paper 2001-0296, 39th Aerospace Sciences Meeting and Exhibit, January 2001, Reno, Nevada.

18.

Seifert, A. and Pack, L. 1999a. “Oscillatory Control of Separation at High Reynolds Numbers,” AIAA Journal, 37(9): 1062-1071 .

19.

Seifert, A. and Pack, L. 1999b. ‘ ‘Oscillatory Excitation of Unsteady Compressible Flows Over Airfoils at Flight Reynolds Numbers,” AIAA Paper 99-0925, 37th Aerospace Sciences Meeting and Exhibit, January 1999, Reno, Nevada.

20.

Shahinpoor, M. and Kim, K.J. 2001. “Ionic Polymer-metal Composites: I. Fundamentals,” Smart Materials and Structures, 10(4): 819-833 .

21.

Shahinpoor, M. and Kim, K.J. 2002. ‘ ‘Solid-state Polymeric Sensors, Transducers, and Actuators, US Patent Application 20020050454 (May 2, 2002).

22.

Shahinpoor, M. and Kim, K.J. 2004. “Ionic Polymer-metal Composites: III. Modeling and Simulation as Biomimetic Sensors, Actuators, Transducers, and Artificial Muscles,” Smart Materials and Structures, 13(6): 1362-1388 .

23.

Taleghani, B.K. and Campbell, J.F. 1999. ‘ ‘Non-linear Finite Element Modeling of THUNDER Piezoelectric Actuators,” NASA/TM-1999-209322.