Experiments in Fluids

, Volume 39, Issue 6, pp 995–1008 | Cite as

Active control of lifted diffusion flames with arrayed micro actuators

  • N. Kurimoto
  • Y. SuzukiEmail author
  • N. Kasagi
Research Article


Active control of a lifted flame issued from a coaxial nozzle is investigated. Arrayed micro flap actuators are employed to introduce disturbances locally into the initial shear layer. Shedding of large-scale vortex rings is modified with the flap motion, and the flame characteristics such as liftoff height, blowoff limit, and emission trend, are successfully manipulated. Spatio-temporal evolution of large-scale vortical structures and fuel concentration is examined with the aid of PIV and PLIF in order to elucidate the control mechanisms. It is found that, depending on the driving signal of the flaps, the near-field vortical structures are significantly modified and two types of lifted flames having different stabilization mechanisms are realized.


Particle Image Velocimetry Nozzle Exit Flame Front Vortical Structure Mixture Fraction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported through the research project on Micro Gas Turbine/Fuel Cell Hybrid-Type Distributed Energy System by the Department of Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology Corporation (JST).


  1. ANSI/ASME PTC 19.1 (1985) Measurement uncertainty. Supplement on instruments and apparatus, part 1, ASMEGoogle Scholar
  2. Ashurst WT, Williams FA (1990) Vortex modification of diffusion flamelets. The 23rd International Symposium on Combustion, pp543–550Google Scholar
  3. Baillot F, Demare D (2002) Physical mechanisms of a lifted nonpremixed flame stabilized in an acoustic field. Combust Sci Tech 174:73–98CrossRefGoogle Scholar
  4. Cantwell BJ (1981) Organized motion of turbulent-flow. Ann Rev Fluid Mech 13:457–515CrossRefGoogle Scholar
  5. Chao YC, Jeng MS (1992) Behavior of the lifted jet flame under acoustic excitation. In: Proceedings of the 24th International Symposium on Combustion, pp 333–340Google Scholar
  6. Chao YC, Yuan T, Tseng CS (1996) Effect of flame lifting and acoustic excitation on the reduction of NOx emissions. Combust Sci Tech 113:49–65CrossRefGoogle Scholar
  7. Chao YC, Jong YC, Sheu HW (2000) Helical-mode excitaion of lifted flames using piezoelectric actuators. Exp Fluids 28:11–20CrossRefGoogle Scholar
  8. Chao YC, Wu CY, Yuan AT (2002) Stabilization process of a lifted flame tuned by acoustic excitation. Combust Sci Tech 174:87–110CrossRefGoogle Scholar
  9. Correa SM (1992) A review of NOx formation under gas turbine combustion conditions. Combust Sci Tech 87:329–362CrossRefGoogle Scholar
  10. Crow SC, Champagne FH (1971) Orderly structure in jet turbulence. J Fluid Mech 48:547–591CrossRefGoogle Scholar
  11. Dahm WJA, Frieler CE, Tryggvason G (1992) Vortex structure and dynamics in the near field of a coaxial jet. J Fluid Mech 241:371–402CrossRefGoogle Scholar
  12. Demare D, Baillot F (2001) The role of secondary instabilities in the stabilization of a nonpremixed lifted flame. Phys Fluids 13:2662–2670CrossRefGoogle Scholar
  13. Drake MC, Correa SM, Pitz RW, Shyy W, Fenimore CP (1987) Superequilibrium and thermal nitric oxide formation in turbulent diffusion flames. Combust Flame 69:347–365CrossRefGoogle Scholar
  14. Everest DA, Feikema DA, Driscoll JF (1996) Images of the strained flammable layer used to study the liftoff turbulent jet flames. The 26th International Symposium on Combustion, pp 129–136Google Scholar
  15. Favre-Marinet M, Camano Schettini EB (2001) The density field of coaxial jets with large velocity ratio and large density differences. Int J Heat Mass Trans 44:1913–1924CrossRefGoogle Scholar
  16. Fujimori T, Riechelmann D, Sato J (1998) Effect of liftoff on NOx emission of turbulent jet flame in high-temperature coflowing air. The 27th International Symposium on Combustion, pp 1149–1155Google Scholar
  17. Ho CM, Huerre P (1984) Perturbed free shear layers. Ann Rev Fluid Mech 16:365–424CrossRefGoogle Scholar
  18. Ho CM, Tai YC (1996) Review: MEMS and its applications for flow control. ASME Int Fluids Eng 118:437–447Google Scholar
  19. Hussain AKMF, Zaman KBMQ (1981) The preferred mode of the axisymmetric mode. J Fluid Mech 110:39–71CrossRefGoogle Scholar
  20. Kean RD, Adrian RJ (1990) Optimization of particle image velocimeters. Part I: Double pulsed systems. Meas Sci Technol 1:1202–1215CrossRefGoogle Scholar
  21. Kean RD, Adrian RJ (1992) Theory of cross-correlation analysis of PIV images. J Appl Sci Res 49:191–215CrossRefGoogle Scholar
  22. Kurimoto N, Suzuki Y, Kasagi N (2001) Active control of coaxial jet mixing and combustion with arrayed micro actuators. In: Proceedings of the fifth World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Thessaloniki, pp 511–516Google Scholar
  23. Liepmann D, Gharib M (1992) The role of streamwise vorticity in the near-field entrainment of round jets. J Fluid Mech 245:643–668CrossRefGoogle Scholar
  24. Lozano A, Yip B, Hanson RK (1992) Acetone: a tracer for concentration measurements in gaseous flows by planar laser-induced fluorescence. Exp Fluids 13:369–376CrossRefGoogle Scholar
  25. Melling A (1997) Tracer particles and seeding for particle image velocimetry. Meas Sci Technol 8:1406–1416CrossRefGoogle Scholar
  26. Muñiz L, Mungal MG (1997) Instantaneous flame-stabilization velocities in lifted-jet diffusion flames. Combust Flame 111:16–31CrossRefGoogle Scholar
  27. Peters N, Williams FA (1983) Liftoff characteristics of turbulent jet diffusion flames. AIAA J 21:423–429zbMATHCrossRefGoogle Scholar
  28. Pitts WM (1988) Assessment of theories for the behavior and blowout of lifted turbulent jet diffusion flames. The 22nd International Symposium on Combustion, pp 809–816Google Scholar
  29. Rehab H, Villermaux E, Hopfinger EJ (1997) Flow regimes of large-velocity-ratio coaxial jets. J Fluid Mech 345:357–381CrossRefMathSciNetGoogle Scholar
  30. Schefer RW, Goix PJ (1998) Mechanism of flame stabilization in turbulent lifted-jet flames. Combust Flame 112:559–574CrossRefGoogle Scholar
  31. Su LK, Han D, Mungal MG (2000) Measurements of velocity and fuel concentration in the stabilization region of lifted jet diffusion flames. Proc Combust Inst 28:327–334Google Scholar
  32. Suzuki H, Kasagi N, Suzuki Y (1999) Manipulation of a round jet with electromagnetic flap actuators. In: Proceedings of the 12th IEEE International Conference on MEMS’99, Orlando, pp 534–540Google Scholar
  33. Suzuki H, Kasagi N, Suzuki Y (2004) Active control of an axisymmetric jet with distributed electromagnetic flap actuators. Exp Fluids 36:498–509CrossRefGoogle Scholar
  34. Uechi H, Kimijima S, Kasagi N (2004) Cycle analysis of gas turbine-fuel cell cycle hybrid micro generation system. J Eng Gas Turbines Power 126:755–762CrossRefGoogle Scholar
  35. Vanquikenborne L, Tiggelen AV (1966) The stabilization mechanism of lifted diffusion flames. Combust Flame 10:59–69CrossRefGoogle Scholar
  36. Vervisch L (2000) Using numerics to help the understanding of non-premixed turbulent flames. Proc Combust Inst 28:11–24CrossRefGoogle Scholar
  37. Zaman KBMQ, Hussain AKMF (1980) Vortex pairing in a circular jet under controlled excitation. J Fluid Mech 101:449–491CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringThe University of TokyoBunkyo-ku, TokyoJapan

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