Sage Journals: Discover world-class research

Abstract

Synthetic jets have been proposed for efficient flow control due to their unique zero-net-mass-flux feature and the conceptual simplicity of the system. However, the effectiveness of the control is heavily dependent upon the complicated flow interaction of the jets with the flow stream on which the jet is applied. To understand the flow control mechanism better, a numerical simulation method is investigated in this paper. Using a computational fluid dynamics technique, the detached eddy simulation for an isolated synthetic jet for flow control is presented. A cubic-root filter is introduced with continuous eddy viscosity variation at the switching point between the Reynolds-averaged Navier—Stokes solution region and the large eddy simulation region. The intention is to explore the effects of unstructured grids for such a filtering strategy. A dissipation-controlled Roe scheme is applied and a dynamic grid technique is employed to implement the periodically moving diaphragm. The results obtained are compared with the experimental data and a previous study using structured grids.

Keywords

flow control synthetic jet detached eddy simulation dynamic grid

Get full access to this article

View all access options for this article.

References

Schaeffler

N. W.

The interaction of a synthetic jet and a turbulent boundary layer. AIAA paper 2003–643, 2003.

Glezer

Amitay

Synthetic jets. Annual Rev. Fluid Mechanics, 2002, 34, 503–529.

Ciuryla

Liu

Farnsworth

Kwan

Amitay

Flight control using synthetic jets on a Cessna 182 model. J. Aircraft, 2007, 44(2), 642–653.

Saman

P. G.

Dynamics of vorticity. J. Fluid Mechanics, 1981, 106(1), 49–58.

Zhong

Garcillian

Wood

N. J.

Dye visualisation of inclined and skewed synthetic jets in a cross flow. Aeronaut. J., 2005, 109(1093), 147–155.

Smith

B. L.

Glezer

Vectoring and small-scale motions effected in free shear flows using synthetic jet actuator. AIAA paper 1997–0213, 1997.

Smith

B. L.

Glezer

The formation and evolution of synthetic jets. Physics of Fluids, 1998, 31, 2281–2297.

8 Spalart

P. R.

Travin

, et al. Comments on the feasibility of LES for wings, and on a hybrid RANS/LES. In Proceedings of the 1st AFOSR International Conference on DNS and LES, Louisiana Tech., 1997, Greyden Press, pp. 137–147.

9 Shur

Spalart

, et al. Towards the predicition of noise from jet engines. Int. J. Heat and Fluid Flow, 2003, 24, 551–561.

10.

10 Breuer

Jovicic

, et al. Comparison of DES, RANS and LES for the separated flow around a flat plate at high incidence. Int. J. Numer. Meth. Fluids, 2003, 41, 357–388.

11.

Xia

Qin

Numerical study of vortical motions from a synthetic jet. Am. Inst. Aeronaut. Astronaut. J., (submitted).

12.

Xia

Dynamic grid detached-eddy simulations for synthetic jet flows, PhD Thesis, The University of Sheffield, 2005.

13.

Liu

Qin

Xia

Fast dynamic grid deformation based on Delaunay graph mapping. J. Comput. Physics, 2006, 221, 405–423.

14.

Rumsey

C. L.

Gatski

T. B.

Sellers

W. L.

Vasta

V. N.

Viken

S. A.

Summary of the 2004 Computational Fluid Dynamics Validation Workshop on Synthetic Jets. Am. Inst. Aeronaut. Astronaut. J., 2004, 44(2), 194–207.

15.

Bui

A parallel, finite-volume algorithm for large-eddy simulation of turbulent flows. NASA/TM-1999–206570, 1999.

16.

Strelets

Detached eddy simulation of massively separated flows. AIAA paper 2001–0879, 2001.

17.

Kotapati

Mittal

Time-accurate three-dimensional simulations of synthetic jets in quiescent air. AIAA paper 2005–0103, 2005.

18.

Cui

Agarwal

R. K.

Three-dimensional computation of a synthetic jet in quiescent air. Am. Inst. Aeronaut, Astronaut, J., 2006, 44, 2857–2865.

19.

19 Spalart

P. R.

Deck

, et al. A new version of detached-eddy simulation, resistant to ambiguous grid densities. Theor. Comput. Fluid Dynamics, 2006, 20, 181–195.

Detached eddy simulation of a synthetic jet for flow control

Abstract

Keywords

Get full access to this article

References