Skip to main content
SpringerLink
Log in

Direct numerical simulation of hydrogen turbulent lifted jet flame in a vitiated coflow

  • Articles
  • Engineering Thermophysics
  • Published:
Chinese Science Bulletin

Abstract

The direct numerical simulation (DNS) method with 16 steps detailed chemical kinetics was applied to a lifted turbulent jet flame with H2/N2 fuel issuing into a wide hot coflow of lean combustion products, at temperature of 1045 K and low oxygen concentrations. The chemical reactions were handled by the library function of CHEMKIN which was called by the main program in every time step. Parallel computational technology based on message passing interface method (MPI) was used in the simulation. All the cases were run by 12 CPUs on a high performance computer system. Faver-averaged DNS results were obtained by long time averaging the transient profile and compared with the experimental data. The roll-up and evolution of the vortices in jet flame were well captured. The vortices in the same rotating direction attracted each other and those in different rotating directions repulsed each other. Through complex interactions between vortices, the original symmetrical vortex structure could be converted into nonsymmetrical and more complex structures by combination, distortion and splitting of the vortices. The transient profiles of H, OH and H2O mass fraction at 5.76 ms showed the flame structure in jet flame, especially the autoignition regions clearly. The lift-off height was about 9 d–11 d, in agreement with the experimental observation. At the corner point of the flame sheet indicated by OH and H profiles, the combustion was always enhanced by the flame curvature and extended resident time. The profiles of turbulence intensities show that the flames were diffused from the original two outside flame sheets into the core. The DNS results can be considered in developing more accurate and more universal turbulence models.

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. Burgess C P, Lawn C J. The premixture model of turbulent burning to describe lifted jet flames. Combust Flame, 1999, 119: 95–108

    Article  Google Scholar 

  2. Wu C Y, Chao Y C, Cheng T S, et al. The blowout mechanism of turbulent jet diffusion flames. Combust Flame, 2006, 145: 481–494

    Article  Google Scholar 

  3. Kim I S, Mastorakos E. Simulations of turbulent Non-premixed counterflow flames with first-order conditional moment closure. Flow Turbul Combust, 2006, 76: 122–162

    Article  Google Scholar 

  4. Barlow R S, Smith N S A, Chen J Y, et al. Nitric oxide formation in dilute hydrogen jet flames: Isolation of the effects of radiation and turbulence-chemistry submodels. Combust Flame, 1999, 117: 4–31

    Article  Google Scholar 

  5. Wang H, Chen Y. Flamelet modeling of turbulent non-premixed flame based on detailed chemical reaction mechanisms. J Combust Sci Technol, 2004, 10: 77–81

    Google Scholar 

  6. Christo F C, Dally B B. Modeling turbulent reacting jets issuing into a hot and diluted coflow. Combust Flame, 2005, 142: 117–129

    Article  Google Scholar 

  7. Cabra R, Chen J Y, Dibble R W, et al. Lifted methane-air jet flames in a vitiated coflow. Combust Flame, 2005, 143: 491–506

    Article  Google Scholar 

  8. Wang H, Yiliang C. A PDF simulation of the lifted turbulent H2/N2 jet flame. Chin J Comput Phys, 2006, 23: 73–79

    Google Scholar 

  9. Yong J, Rong Q, Wei Z, et al. Conditional moment closure modeling of a lifted turbulent flame. Chin Sci Bull, 2005, 50: 1261–1269

    Article  Google Scholar 

  10. Cao R R, Pope S B, Masri A R. Turbulent lifted flames in a vitiated coflow investigated using joint PDF calculations. Combust Flame, 2005, 142: 438–453

    Article  Google Scholar 

  11. Chen J H, Hawkes E R, Sankaran R, et al. Direct numerical simulation of igintion front propagation in a constant volume with temperature inhomogeneities I. Fundamental analysis and diagnostics. Combust Flame, 2006, 145: 128–144

    Article  Google Scholar 

  12. Mahalingam S, Chen J H, Vervisch L. Finite-rate chemistry and transient effects in direct numerical simulations of turbulent nonpremixed flames. Combust Flame, 1995, 102: 285–297

    Article  Google Scholar 

  13. Hawkes E R, Chen J H. Direct numerical simulation of hydrogen-enriched lean premixed methane-air flames. Combust Flame, 2004, 138: 242–258

    Article  Google Scholar 

  14. Echekki T, Chen J H. Direct numerical simulation of autoigintion in non-homogeneous hydrogen-air mixures. Combust Flame, 2003, 134: 169–191

    Article  Google Scholar 

  15. Im H G, Chen J H. Preferential diffusion effects on the burning rate of interacting turbulent premixed hydrogen-air flames. Combust Flame, 2002, 131: 246–258

    Article  Google Scholar 

  16. Hilbert R, Thevenin D. Autoignition of turbulent non-premixed flames investigated using direct numerical simulations. Combust Flame, 2002, 128: 22–37

    Article  Google Scholar 

  17. Viggiano A, Magi V. A 2-D investigation of n-heptane autoignition by means of direct numerical simulation. Combust Flame, 2004, 137: 432–443

    Article  Google Scholar 

  18. James S, Jaberi F A. Large scale simulation of two-dimensional nonpremixed methane jet flames. Combust Flame, 2000, 123: 465–487

    Article  Google Scholar 

  19. Jiang X, Luo K H. Direct numerical simulation of the near field dynamics of a rectangular reactive plume. Int J Heat Fluid Flow, 2001, 22: 633–642

    Article  Google Scholar 

  20. Jiang X, Luo K H. Dynamics and structure of transitional buoyant jet diffusion flames with side-wall effects. Combust Flame, 2003, 133: 29–45

    Article  Google Scholar 

  21. Cabra R. Turbulent jet flames into a vitiated coflow. Dissertation for the Doctoral Degree. Berkeley: University of California, 2003

    Google Scholar 

  22. Cabra R, Chen J Y, Dibble R W, et al. Simultaneous Laser Raman-Rayleigh-LIF measurements and numerical modeling results of a lifted turbulent H2/N2 jet flame in a vitiated coflow. 29th International Symposium on Combustion. Sapporo: Combustion Institute, 2002

    Google Scholar 

  23. James S F A J. Large scale simulation of two-dimensional nonpremixed methane jet flames. Combust Flame, 2000, 123: 465–487

    Article  Google Scholar 

  24. Kee R J, Rupley F M, Miller J A, et al. CHEMKIN User’s Guide Version 4.0, 2004

  25. Zhou X, Sun Z, Brenner G, et al. Combustion modeling of turbulent jet diffusion H2/air fame with detailed chemistry. Int J Heat Mass Transf, 2000, 43: 2075–2088

    Article  Google Scholar 

  26. Fan J, Luo K, Ha M Y, et al. Direct numerical simulation of a near-field particle-laden plane turbulent jet. Phys Rev E, 2004, 70: 026303.

    Google Scholar 

  27. Stanley S, Sarkar S, Mellado J. A study of the flow field evolution and mixing in a planar turbulent jet using direct numerical simulation. J Fluid Mech, 2002, 450: 377–407

    Article  Google Scholar 

  28. Eswaran V, Pope S B. An examination of forcing in direct numerical simulations of turbulence. Comput Fluids, 1988, 16: 257–278

    Article  Google Scholar 

  29. Jimenez J, Wray A A, Saffman P G, et al. The structure of intense vorticity in isotropic turbulence. J Fluid Mech, 1993, 255: 65–90

    Article  Google Scholar 

  30. Grimmett T K. A DNS study of differential diffusion in nonpremixed reacting turbulent flows using a generalized Burke-Schumann formulation. Dissertation for the Doctoral Degree. San Diego: University of California, 2001

    Google Scholar 

  31. Kops S M D B. Numerical simulation of non-premixed turbulent combustion. Dissertation for the Doctoral Degree. Washington: University of Washington, 1999

    Google Scholar 

  32. Poinsot T J, Lele S K. Boundary conditions for direct simulation of compressible viscous flows. J Comput Phys, 1992, 101: 104–129

    Article  Google Scholar 

  33. Baum M, Poinsot T, Thevenint D. Accurate boundary conditions for multicomponent reactive flows. J Comput Phys, 1994, 116: 247–261

    Article  Google Scholar 

  34. Stanley S A. A computational study of spatially evolving turbulent plane jets. Dissertation for the Doctoral Degree. San Diego: University of California, 1998

    Google Scholar 

  35. Wang Z, Zhou J, Fan J, et al. Direct numerical simulation of ozone injection technology for NOx control in flue gas. Energy Fuels, 2006, 20: 2432–2438

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China

    Wang ZhiHua, Fan JianRen, Zhou JunHu & Cen KeFa

Authors
  1. Wang ZhiHua
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Fan JianRen
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Zhou JunHu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Cen KeFa
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Fan JianRen.

Additional information

Supported by China Postdoctoral Science Foundation (20060391042), the Key Project of Chinese National Programs for Fundamental Research and Development (2006CB 200303), the National Natural Science Foundation for Distinguished Young Scholars (Grant No. 50525620), and Natural Science Foundation of Zhejiang Province (Grant No. Z104314)

About this article

Cite this article

Wang, Z., Fan, J., Zhou, J. et al. Direct numerical simulation of hydrogen turbulent lifted jet flame in a vitiated coflow. CHINESE SCI BULL 52, 2147–2156 (2007). https://doi.org/10.1007/s11434-007-0290-1

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11434-007-0290-1

Keywords

Search

Navigation