Share This Article:

Jet Flapping Control with Acoustic Excitation

Abstract Full-Text HTML XML Download Download as PDF (Size:810KB) PP. 49-56
DOI: 10.4236/jfcmv.2013.12007    2,809 Downloads   5,849 Views   Citations


The dynamics of flapping motion of a rectangular jet under acoustic excitation is studied experimentally by means of hot-wire measurement and flow visualization with smoke method. The excitation sufficiently enablesphase-lock, which permitted us to extract the organized wave motion from a background field of finite turbulent fluctuations. The mean and fluctuation velocity are investigated and focused on the excitation frequency and the Reynolds number. As the excitation frequency decreases, it was found that the jet flapping and the jet spread were enhanced. The excitation with sub-harmonic frequency has significant effects on the rectangular jet behavior. The maximum value of the periodic velocity fluctuation strongly depends on the excitation frequency.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

S. Iio, K. Hirashita, Y. Katayama, Y. Haneda, T. Ikeda and T. Uchiyama, "Jet Flapping Control with Acoustic Excitation," Journal of Flow Control, Measurement & Visualization, Vol. 1 No. 2, 2013, pp. 49-56. doi: 10.4236/jfcmv.2013.12007.


[1] S. C. Crow and F. H. Champagne, “Orderly Structure in Jet Turbulence,” Journal of Fluid Mechanics, Vol. 48, No. 3, 1971, pp. 547-591. doi:10.1017/S0022112071001745
[2] G. Brown and A. Roshko, “On Density Effects and large Structure in Turbulent Mixing Layers,” Journal of Fluid Mechanics, Vol. 64, No. 4, 1974, pp. 775-816. doi:10.1017/S002211207400190X
[3] A. K. M. F. Hussain and K. B. M. Q. Zaman, “Vortex Pairing in a Circular Jet under Controlled Excitation, Part 2, Coherent Structure Dynamics,” Journal of Fluid Mechanics, Vol. 101, No. 3, 1980, pp. 493-544. doi:10.1017/S0022112080001772
[4] K. Toyoda, T. Okamoto and Y. Shirahama, “Eduction of Vortical Structures by Pressure Measurements in Noncircular Jets,” Applied Scientific Research, Vol. 53, No. 3-4, 1994, pp. 237-248. doi:10.1007/BF00849102
[5] F. F. Grinstein, E. J. Gutmark, T. P. Parr, D. M. Hanson-Parr and U. Obeysekare, “Streamwise and Spanwise Vortex Interaction in an Axisymmetric Jet. A Computational and Experimental Study,” Physics of Fluids, Vol. 8, No. 6, 1996, pp. 1515-1524. doi:10.1063/1.868927
[6] S. Kida and M. Takaoka, “Bridging in Vortex Reconnection,” Physics of Fluids, Vol. 30, No. 10, 1987, pp. 2911-2914. doi:10.1063/1.866066
[7] S. Iio, K. Takahashi, Y. Haneda and T. Ikeda, “Flow Visualization of Vortex Structure in a Pulsed Rectangular Jet,” Journal of Visualization, Vol. 11, No. 2, 2008, pp. 125-132. doi:10.1007/BF03181927
[8] S. Iio, T. Kawamura, M. Matsubara, T. Yoshida and T. Ikeda, “Vortex Behavior of Pulsating Jets from a Rectangular Nozzle,” JSME International Journal Series B, Vol. 49, No. 4, 2006, pp. 988-994.
[9] N. Fujisawa, Y. Takizawa, T. Kohno and S. Tomimatsu, “Active Control of Flow Oscillations in Jet-Wedge System by Acoustic Feedback,” Journal of Fluids and Structures, Vol. 19, No. 1, 2004, pp. 111-122. doi:10.1016/j.jfluidstructs.2003.09.001
[10] H. Sato, “The Stability and Transition of a Two-Dimensional Jet,” Journal of Fluid Mechanics, Vol. 7, No. 1, 1960, pp. 53-80. doi:10.1017/S0022112060000049
[11] C. Ho and P. Huerre, “Perturbed Free Shear Layers,” Annual Review of Fluid Mechanics, Vol. 16, 1984, pp. 365-422. doi:10.1146/annurev.fl.16.010184.002053
[12] E. Gutmark and C. M. Ho, “Preferred Modes and the Spreading Rates of Jets,” Physics of Fluids, Vol. 26, No. 10, 1983, pp. 2932-2938. doi:10.1063/1.864058
[13] V. W. Gold-schmidt and P. Bradshaw, “Flapping of a plane jet,” Physics of Fluids, Vol. 16, No. 3, 1973, pp. 354-355. doi:10.1063/1.1694348
[14] J. C. de Gortari and V. W. Goldschmidt, “The Apparent Flapping Motion of a Turbulent Plane Jet-Further Experimental Results,” Journal of Fluids Engineering, Vol. 103, No. 1, 1981, pp. 119-126. doi:10.1115/1.3240757
[15] O. V. Atassi and R. M. Lueptow, “A Model of Flapping Motion in a Plane Jet,” European Journal of Mechanics—B/Fluids, Vol. 21, No. 1, 2002, pp. 171-183. doi:10.1016/S0997-7546(01)01176-1
[16] B. L. Smith and A. Glezer, “Jet Vectoring Using Synthetic Jets,” Journal of Fluid Mechanics, Vol. 458, 2002, pp. 1-34. doi:10.1017/S0022112001007406
[17] T. Koso and T. Kinoshitat, “Agitated Turbulent Flowfield of a Circular Jet with an Annular Synthetic Jet Actuator,” Journal of Fluid Science and Technology, Vol. 3, No. 2, 2008, pp. 323-333. doi:10.1299/jfst.3.323
[18] H. Hasegawa and K. Takahashi, “Experimental Investigation of the Generation of a Longitudinal Vortex in a Transverse Synthetic Jet with Different Excitation Frequencies,” Journal of Fluid Science and Technology, Vol. 6, No. 4, 2011, pp. 412-424. doi:10.1299/jfst.6.412
[19] S. Iio, K. Hibino, M. Matsubara and T. Ikeda, “Acoustic Control of an Impinging Planar Jet upon a Wedge,” Journal of Fluid Science and Technology, Vol. 3, No. 2, 2008, pp. 274-281. doi:10.1299/jfst.3.274
[20] A. K. M. F. Hussain and W. C. Reynolds, “The Mechan-Ics of an Organized Wave in Turbulent Shear Flow,” Journal of Fluid Mechanics, Vol. 41, No. 2, 1970, pp. 241-258. doi:10.1017/S0022112070000605

comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.