Skip to main content
SpringerLink
Log in

A visual study on turnabout phenomenon of vortex roll-up in forced jet diffusion flames

  • Fluids Engineering
  • Published:
Journal of Mechanical Science and Technology Aims and scope Submit manuscript

Abstract

An experimental study on the effect of forcing amplitude in forced jet diffusion flames has been conducted. Various flow visualization techniques are employed using optical schemes, including light scattering photography, high speed imaging by motion analysis, and determination of velocity vector and vorticity fields from PIV data. Particular attenttion is focused on the turnabout mechanism around the elongated flame, which has not been reported previously, and on the inner coherent structure of the forced jet in the attached flame regime. In particular, we present a schematic diagram that aids in the understanding of the turnabout mechanism of vortex roll-up. This diagram explains why the forced flame is elongated under moderate forcing amplitudes but shortens again when the forcing amplitude is further increased.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. A. J. Yule, Large-scale structure in the mixing layer of a round jet,J. Fluid Mech. 89 (1978) 413.

    Article  Google Scholar 

  2. A. K. M. F. Hussain, Coherent structures and turbulence,J. Fluid Mech. 173 (1986) 303.

    Article  Google Scholar 

  3. P. J. Vermeulen, V. Ramesh and W. K. Yu, Measurement of entrainment by acoustically pulsed axisymmetric air jets,J. of Engineering for Gas Turbines and Powers 108 (1986) 479.

    Article  Google Scholar 

  4. W. S. Anthony and J. C. Brain, Visualization of the structure of a pulsed methane-air diffusion flame,Phys. Fluids. 28, (1985) 2317.

    Article  Google Scholar 

  5. L. G. Pearson, A. Gabelli, I. G. Shepherd and N. B. Hamilton, Structure in diffusion flames an accoustic viewpoint, Joint International Conference Australia/ New Zealand and Japanese Section of the Combustion Institute, Sydney, (1989) 24.

  6. E. Gutmak, T. P. Parr, D. M. Hanson-Parr and K. C. Schadow, Planar imaging of vortex dynamics in flames,J. of Heat Transfer. 111 (1989) 148.

    Article  Google Scholar 

  7. T. K. Kim, J. Park and H. D. Shin, Mixing mechanism near the nozzle exit in a tone excited nonpremixed jet flame,Combustion Science and technology 89 (1993) 83.

    Article  Google Scholar 

  8. K. M. Lee, S. K. Oh and J. Park, A visual investigation of coherent structure behavior under toneexcited laminar non-premixed jet flame,J. of KSME B. 27 (2003) 275.

    Google Scholar 

  9. S. G. Kim, K. T. Kim and J. Park, An experimental study on the lift-off behavior of tone-excited propane non-premixed jet flames,J. of KSME B. 28 (2004) 569.

    Google Scholar 

  10. S. K. Oh, An experimental study on the structure of forced jet and jet diffusion flames, Ph. D. Thesis, KAIST, Taejeon, (2001).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Mechanical and Aerospace Engineering, Sunchon National University, 540-742, Jeonnam, Korea

    Kee-Man Lee

Authors
  1. Kee-Man Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Kee-Man Lee.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lee, KM. A visual study on turnabout phenomenon of vortex roll-up in forced jet diffusion flames. J Mech Sci Technol 21, 2221–2228 (2007). https://doi.org/10.1007/BF03177483

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03177483

Keywords

Search

Navigation