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http://dx.doi.org/10.6112/kscfe.2015.20.1.077

NUMERICAL STUDY ON SYNTHETIC-JET-BASED FLOW SUPPLYING DEVICE  

Park, M. (Department of Aerospace Engineering, Seoul National University)
Lee, J. (Department of Aerospace Engineering, Seoul National University)
Kim, C. (Department of Aerospace Engineering, Seoul National University)
Publication Information
Journal of computational fluids engineering / v.20, no.1, 2015 , pp. 77-83 More about this Journal
Abstract
Flow characteristics of synthetic jet based flow supplying devices have been computationally investigated for different device shapes. Jet momentum was produced by the volume change of a cavity by two piezoelectric-driven diaphragms. The devices have additional flow path compared with the original synthetic jet actuator, and these flow path changes the flow characteristics of synthetic jet actuator. Four non-dimensional parameters, which were functions of the shapes of the additional flow path, were considered as the most critical parameters in jet performance. Comparative studies were conducted to compare volume flow rate and jet velocity. Computed results were solved by 2-D incompressible Navier-Stokes solver with k-w SST turbulence model. Detailed computations revealed that the additional flow path diminishes suction strength of the synthetic jet actuator. In addition, the cross section area of the flow path has more influence over the jet performances than the length of the flow path. Based on the computational results, the synthetic jet based flow supplying devices could be improved by applying suitable shape of the flow path.
Keywords
SJA(Synthetic Jet Actuator); CFD; Flow Supplying Device; Piezoelectric-driven diaphragm; RSM(Response Surface Methodology);
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1 2006, Rumsey, C.L., Gatski, T.B., Seller, W.L., Vatsa, V.N. and Viken, S.A., "Summary of the 2004 Computation Fluid Dynamics Validation Workshop on Synthetic Jets," AIAA Journal, Vol.44, pp.194-207.   DOI
2 2007, Zhong, S., Jabbal, M., Tang, H., Luis, G., Guo, F., Wood, N. and Warsop, C., "Towards the Design of Synthetic-jet Actuators for Full-scale Flight Conditionis, Part 1: The Fluid Mechanics of Synthetic-jet Actuators," Flow, Turbulence and Combust, Vol.78, pp.283-307.   DOI
3 2011, Jain, M., Puranik, B. and Agrawal, A., "A numerical investigation of effects of cavity and orifice parameters on the characteristics of a synthetic jet flow," Sensors and Actuators A: Physical, Vol.165, pp.351-366.   DOI
4 2009, Kim, S. and Kim, C., "Separation Control on NACA23012 Using Synthetic Jet," Aerospace Science and Technology, Vol.13, pp.172-182.   DOI
5 2012, Lee, B., Kim, M., Lee, J., Kim, C. and Jung, K., "Separation Control Characteristics of Synthetic Jets with Circular Exit Array," 6th AIAA Flow Control Conference.
6 2005, Luo, Z. and Xia, Z.. "A Novel Valve-Less Synthetic-Jet-Based Micro-Pump," Sensors and Actuators A: Physical, Vol.122, pp.131-140.   DOI
7 2014, Hirata, A., Kamitani, G., Wada, H., Sunaga, M. and Kanai, S., "Piezoelectric micro-blower," U.S. Patent No.8,678,787.
8 1967, Chorin, A.J., "A Numerical Method for Solving Incompressible Viscous Flow Problems," Journal of Computational Physics, Vol.2, No.1, pp.12-26.   DOI   ScienceOn
9 1994, Menter, F.R., "Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications," AIAA Journal, Vol.8, pp.1598-1605.
10 1991, Yoon, S. and Kwak, D., "Three-Dimensional Incompressible Navier-Stokes Solver Using Lower-Upper Symmetric Gauss Seidel Algorithm," AIAA Journal, Vol.29, pp.874-875.   DOI
11 2000, Kim, C.S., Kim, C. and Rho, O.H., "Parallel Computations of High-Lift Airfoil Flows Using Two-Equation Turbulence Models," AIAA Journal, Vol.38. pp.1360-1368.   DOI
12 2007, Mane, P., Mossi, K., Rostami, A., Bryant, R. and Castro, N., "Piezoelectric Actuators as Synthetic Jets : Cavity Dimension Effects," Journal of Intelligent Material Systems and Structures, Vol.18, pp.1175-1190.