Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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EFFECTS OF FLUIDIC OSCILLATOR GEOMETRY ON PERFORMANCE

유체진동기의 형상 변화가 성능에 미치는 영향

  • 정한솔 (인하대학교 대학원 기계공학과) ;
  • 김광용 (인하대학교 기계공학부)
  • Received : 2016.08.05
  • Accepted : 2016.09.12
  • Published : 2016.09.30
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Abstract

A parametric study on a fluidic oscillator was performed numerically in this work. Three-dimensional unsteady Reynolds-averaged Navier-Stokes equations were solved to analyze the flow in the fluidic oscillator. As turbulence closure, $k-{\varepsilon}$ model was employed. Validation of the numerical results was performed by comparing numerical results with experimental data for frequency of the oscillation. The parametric study was performed using five geometric parameters. Performance of the fluidic oscillator was evaluated in terms of velocity ratio and pressure drop. The results show that the inlet channel width and the distance between splitters are important factors in determining the performance of the fludic oscillator.

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References

  1. 2007, Lee, K.Y., Chung, H.S., Cho, D.H. and Sohn, M.H., "Flow Separation Control Effects of Blowing Jet on an Airfoil," Journal of The Korean Society for Aeronautical and Sapace Sciences, Vol.35, No.12, pp.1059-1066. https://doi.org/10.5139/JKSAS.2007.35.12.1059
  2. 2006, Nagih, H., Kiedaisch, J., Reinhard, P. and Demanett, B., "Control Techniques for Flows with Large Separated Regions: A New Look at Scailing Parameters," AIAA paper, 2006-2857.
  3. 2010, Curretelli, C., Wuerz, W. and Gharaibah, E., "Unsteady Separation Control on Wind Turbine Blades Using Fluidic Oscillators," AIAA Journal, Vol.48, No.7, pp.1302-1311. https://doi.org/10.2514/1.42836
  4. 2013, Bobusch, B.C., Woszidlo, R., Bergada, J.M., Nayeri, C.N. and Paschereit, C.O., "Experimental study of the internal flow structures inside a fluidic oscillator," Experiments in fluids, Vol.54, No.6, pp.1-12.
  5. 2015, Woszidlo, R., Ostermann, F., Nayeri, C.N. and Paschereit, C.O., "The time-resolved natural flow field of a fluidic oscillator," Experiments in fluids, Vol.56, No.6, pp.1-12. https://doi.org/10.1007/s00348-014-1876-4
  6. 2007, Yang, J.T., Chen, C.K., Tsai, K.J., Lin, W.Z. and Sheen, H.J., "A novel fluidic oscillator incorporating step-shaped attachment walls," Sensors and Actuators A: Physical, Vol.135, No.2, pp.476-483. https://doi.org/10.1016/j.sna.2006.09.016
  7. 2012, Vasta, V., Koklu, M., Wygnanski, I. and Fares, E., "Numerical Simulation of Fluidic Actuators for Flow Control Applications," AIAA paper, 2012-3239.
  8. 2015. Ostermann, F., Woszidlo, R., Nayeri, C. and Paschereit, C.O., "Experimental Comparison between the Flow Field of Two Common Fluidic Oscillator Designs," 53rd AIAA aerospace sciences meeting, Vol.10, No.2514, p.6.
  9. 2013, ANSYS 15.0, ANSYS CFX-Solver Theory Guide, ANSYS Inc.
  10. 2000, Greenblatt, D. and Wygnanski, I.J., "The control of flow separation by periodic excitation," Progress in Aerospace Sciences, Vol.36, No.7, pp.487-545. https://doi.org/10.1016/S0376-0421(00)00008-7
  11. 1993, Menter, F.R., "Zonal two equation k-w turbulence models for aerodynamic flows," AIAA paper, 2906,1993.
  12. 2006, Liu, C., Wang, L. and Liu, Q., "A universal approach for mean mechanical energy losses analysis," Chemical Engineering Science, Vol.61, Issue.6, pp.2085-2088. https://doi.org/10.1016/j.ces.2005.10.011

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