Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Optimum Design of a Micro-fluidic Oscillator

유체 진동자의 최적 설계

  • 노유정 (한국과학기술원 기계공학과) ;
  • 윤성기 (한국과학기술원 기계공학과) ;
  • 김문언 (한국과학기술원 기계공학과)
  • Published : 2004.01.01
Download PDF
⟨ Previous Next ⟩

Abstract

A micro-fluidic oscillator is used to control a linear actuator in a dynamic microsystem. The pressure difference at its two output ports causes the linear actuator to move, and it is a standard of judging the performance of the oscillator. The performance can be improved by optimizing the geometry of the oscillator, which has to enable fluid jet to switch at low inlet velocity. For this, in this study the relationship between the pressure coefficient (difference) and geometric parameters is obtained through the analysis using the software FLUENT. From the results the optimized model that maximize the output pressure difference is obtained by using a cyclic coordinate method that is one of optimization methods. As a result not only the performance is improved, but also the working range is more widen.

Keywords

References

  1. Ute Gebhard, Hein, H., Just, E., and Ruther, P., 1997, 'Combination of a Fluidic Micro-Oscillator and Micro-Actuator in LIGA-Technique for Medical Applications,' TRANSDUCERS-97, Chicago, IL, June https://doi.org/10.1109/SENSOR.1997.635211
  2. Ute Gebhard, H Hein and U Schmidt, 1996, 'Numerical investigation of fluidic micro-oscillators,' Journal of micromechanical microengineering, Vol. 6, pp. 115-117 https://doi.org/10.1088/0960-1317/6/1/028
  3. M. M. Athavale, H. Q. Yang, and A. J. Przekwas, 1999, 'Coupled Fluid-Thermal-Structural Simulations In Microvalves And Microchannels,' MSM-1999, Puerto Rico
  4. Toshiyuki Takaga, Junji Tani, Hirohiko Tanaka, Satoru Hayashi, Tomonari Fujimoto and Ute Gebhard, 1997, 'Simulation and experiment on the dynamic characteristics of a fluidic oscillator with feedback channels,' Transactions of the Japan Society of Mechanical Engineering, Ser.C, Vol. 63, No. 615, pp. 3790-3795 https://doi.org/10.1299/kikaic.63.3790
  5. S-G. Wu, H-N, Su and L-J. Wang, 1980, 'Theoretical and experimental investigation of a fluidic oscillator flowmeter,' Fluidics Symposium, Chicago, Illinois, November 16-21
  6. Wilson. Jr. Mason Patrick, 1968, 'Experimental and theoretical investigation of a fluidic volume flow meter,' the university of Connecticut, Ph.D.
  7. M. P. Wilson, Jr, C. H. Coogan, Jr., and K. Southall, 1969, 'Experimental investigation of a fluidic volume flow meter,' ASME Paper No. 69, WA/FM-3
  8. Kirshner J M and Katz S, 1975, Design Theory of Fluidic Components, Academic Press, New York
  9. Michael Koch, Alan Evans, and Arthur Brunnschweiler, 2000, Microfluidic technology and applications, Research Studies Press, Philadelphia
  10. Yoo-Jeong Noh, 2003, 'Optimum design of a micro-fluidic oscillator,' KAIST, M.D. Thesis
  11. Roger C. Baker, 2000, Flow measurement handbook, Cambridge University Press, New York, pp. 274-275
  12. Mokhtar S. Bazaraa, Hanif D. Sherali, and C. M. Shetty, 1993, Nonlinear programming theory and algorithms, Wiley, New York, pp. 283-287