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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 10 — Apr. 1, 2002
  • pp: 1922–1928

Temperature measurements in steady axisymmetric partially premixed flames by use of rainbow schlieren deflectometry

Xudong Xiao, Ishwar K. Puri, and Ajay K. Agrawal  »View Author Affiliations


Applied Optics, Vol. 41, Issue 10, pp. 1922-1928 (2002)
http://dx.doi.org/10.1364/AO.41.001922


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Abstract

We focus on the utility of rainbow schlieren as a tool for measuring the temperature of axisymmetric partially premixed flames (PPFs). Methane-air PPFs are established on a coannular burner. The flames involve two spatially distinct reaction zones, one in an inner premixed region that has a curved tip and a spatially planar wing portion and another that involves an outer nonpremixed zone in which intermediate species burn in air. Schlieren images are found to visualize clearly these PPF characteristics through light deflection by steep refractive-index gradients in the two reaction zone fronts. The temperature distributions of two flames established at fuel-rich mixture equivalence ratios of ϕ r = 1.5 and 2.0, with bulk-averaged velocities, Vreac = 60 cm s-1 and Vair = 50 cm s-1, are inferred from color schlieren images, and a measurement error analysis is performed. Errors arise from two sources. One lies in the process of inferring the temperature from the refractive-index measurement by making assumptions regarding the local composition of the flame. We have shown through simulations that the average temperature deviations due to these assumptions are 1.7% for the ϕ r = 1.5 flame and 2.3% for the ϕ r = 2.0 flame. Another source involves the local uncertainty in the measurement of the transverse ray displacement at the filter plane that is used to determine the refractive index and thereafter the flame temperature. We have ascertained that a maximum error of 4.3% in the temperature determination can be attributed to this local measurement uncertainty. This investigation demonstrates the capability of the schlieren technique for providing not only qualitative displays of the PPFs but also full-field-of-view temperature measurements that are accurate, spatially resolved, and nonintrusive.

© 2002 Optical Society of America

OCIS Codes
(120.5710) Instrumentation, measurement, and metrology : Refraction
(120.6780) Instrumentation, measurement, and metrology : Temperature
(280.1740) Remote sensing and sensors : Combustion diagnostics
(280.2470) Remote sensing and sensors : Flames

History
Original Manuscript: July 20, 2001
Revised Manuscript: September 24, 2001
Published: April 1, 2002

Citation
Xudong Xiao, Ishwar K. Puri, and Ajay K. Agrawal, "Temperature measurements in steady axisymmetric partially premixed flames by use of rainbow schlieren deflectometry," Appl. Opt. 41, 1922-1928 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-10-1922


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References

  1. Z. Shu, C. W. Choi, S. K. Aggarwal, V. R. Katta, I. K. Puri, “Gravity effects on steady two-dimensional partially premixed methane–air flames,”Combust. Flame 118, 91–107 (1999). [CrossRef]
  2. R. Azzoni, S. Ratti, S. K. Aggarwal, I. K. Puri, “The structure of triple flames stabilized on a slot burner,” Combust. Flame 119, 23–40 (1999). [CrossRef]
  3. N. Peters, “Partially premixed diffusion flamelets in non-premixed turbulent combustion,” in 20th International Symposium on Combustion (The Combustion Institute, Pittsburgh, Pa., 1984), pp. 353–360.
  4. B. Rogg, F. Behrendt, J. Warnatz, “Turbulent non-premixed combustion in partially premixed diffusion flamelets with detailed chemistry,” in 21st International Symposium on Combustion (The Combustion Institute, Pittsburgh, Pa., 1986), pp. 1533–1541.
  5. P. F. Flynn, R. P. Durrett, G. L. Hunter, A. O. Loye, O. C. Akinyemi, J. E. Dec, C. K. Westbrook, SAE Paper 1999-01-0509 (Society of Automotive Engineers, Warrendale, Pa., 1999).
  6. H. M. Hertz, “Experimental determination of 2-D flame temperature fields by interferometric tomography,” Opt. Commun. 1, 131–136 (1985). [CrossRef]
  7. X. Xiao, C. W. Choi, I. K. Puri, “Temperature measurement in steady two-dimensional partially premixed flames using laser holographic interferometry,” Combust. Flame 120, 318–332 (2000). [CrossRef]
  8. X. Xiao, I. K. Puri, “Systematic approach based on holographic interferometry measurements to characterize the flame structure of partially premixed flames,” Appl. Opt. 40, 731–740 (2001). [CrossRef]
  9. G. W. Faris, R. L. Byer, “Three-dimensional beam-deflection optical tomography of a supersonic jet,” Appl. Opt. 27, 5202–5212 (1988). [CrossRef] [PubMed]
  10. P. S. Greenberg, R. B. Klimek, D. R. Buchele, “Quantitative rainbow schlieren deflectometry,” Appl. Opt. 34, 3810–3822 (1995). [CrossRef] [PubMed]
  11. K. N. Alammar, A. K. Agrawal, S. R. Gollahalli, “Application of rainbow schlieren deflectometry for concentration measurements in an axisymetric helium jet,” Exp. Fluids 25, 89–95 (1998). [CrossRef]
  12. B. W. Albers, A. K. Agrawal, “Schlieren analysis of an oscillating gas-jet diffusion flame,” Combust. Flame 119, 84–94 (1999). [CrossRef]
  13. K. N. Alammar, A. K. Agrawal, S. R. Gollahalli, “Quantitative measurements of laminar hydrogen gas-jet diffusion flames in a 2.25 drop tower,” in 28th International Symposium on Combustion (The Combustion Institute, Pittsburgh, Pa., 2000), pp. 1997–2004.
  14. W. L. Howes, “Rainbow schlieren and its application,” Appl. Opt. 23, 2449–2460 (1984). [CrossRef]
  15. R. Rubinstein, P. S. Greenberg, “Rapid inversion of angular deflection data for certain axisymmetric refractive index distributions,” Appl. Opt. 33, 1141–1144 (1994). [CrossRef] [PubMed]
  16. R. J. Goldstein, T. H. Kuehn, Fluid Mechanics Measurements (Taylor and Francis, Washington, D.C., 1996).
  17. A. K. Agrawal, B. W. Albers, D. Griffin, “Abel inversion of deflectometric measurements in dynamic flows,” Appl. Opt. 38, 3394–3398 (1999). [CrossRef]
  18. W. Merzkirch, Flow Visualization, 2nd ed. (Academic, Orlando, Fla., 1987).
  19. X. Qin, X. Xiao, I. K. Puri, S. K. Aggarwal, “Effect of composition distribution on temperature reconstruction from refractive index in flames,” Combust. Flame 128, 121–321 (2002). [CrossRef]
  20. B. J. Hughey, D. A. Santavicca, “A comparison of techniques for reconstructing axisymmetric reacting flow fields from absorption measurements,” Combust. Sci. Technol. 29, 167–190 (1982). [CrossRef]
  21. W. S. Winthrop, M. S. Joanne, Handbook of Real-Time Fast Fourier Transforms (Institute of Electrical and Electronic Engineers, Piscataway, N.J., 1995).
  22. C. Dasch, “One-dimentional tomography: a comparison of Abel, onion-peeling and filtered backprojection methods,” Appl. Opt. 31, 1146–1152 (1992). [CrossRef] [PubMed]

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