OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 33 — Nov. 20, 1999
  • pp: 6912–6917

Flame Flow Tagging Velocimetry with 193-nm H2O Photodissociation

Joseph A. Wehrmeyer, Lubomir A. Ribarov, Douglas A. Oguss, and Robert W. Pitz  »View Author Affiliations


Applied Optics, Vol. 38, Issue 33, pp. 6912-6917 (1999)
http://dx.doi.org/10.1364/AO.38.006912


View Full Text Article

Acrobat PDF (208 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

In a new nonintrusive, instantaneous flow tagging method called hydroxyl tagging velocimetry (HTV), a molecular grid of hydroxyl (OH) radicals is written into a flame and the displaced grid is imaged at a later time to give the flame’s velocity profile. Single-photon photodissociation of vibrationally excited H2O, when a 193-nm ArF excimer laser is used, produces a tag line of superequilibrium OH and H photoproducts in a high-temperature flow field that itself may contain ambient OH. The tag line OH concentration is composed mostly of direct OH photoproducts, but OH is also indirectly produced through H photoproduct reactions with oxygen-bearing species. For lean and modestly rich flames the OH tag lifetime is of the order of 1 ms. For very rich H2-air flames (equivalence ratio of 4.4) the lifetime drops to 200 ns. After displacement the position of the OH tag line is revealed through fluorescence caused by OH (AX) (3 ← 0) excitation by using a 248-nm tunable KrF excimer laser. A HTV grid of multiple tag lines, providing multipoint velocity information, is experimentally demonstrated in a turbulent H2/N2–air diffusion flame.

© 1999 Optical Society of America

OCIS Codes
(280.1740) Remote sensing and sensors : Combustion diagnostics
(280.2470) Remote sensing and sensors : Flames
(280.2490) Remote sensing and sensors : Flow diagnostics
(280.7250) Remote sensing and sensors : Velocimetry
(300.6450) Spectroscopy : Spectroscopy, Raman

Citation
Joseph A. Wehrmeyer, Lubomir A. Ribarov, Douglas A. Oguss, and Robert W. Pitz, "Flame Flow Tagging Velocimetry with 193-nm H2O Photodissociation," Appl. Opt. 38, 6912-6917 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-33-6912


Sort:  Author  |  Year  |  Journal  |  Reset

References

  1. R. W. Ainsworth, S. J. Thorpe, and R. J. Manners, “A new approach to flow-field measurement—a view of Doppler global velocimetry techniques,” Int. J. Heat Fluid Flow 18, 116–130 (1997).
  2. J. C. McDaniel, B. Hiller, and R. K. Hanson, “Simultaneous multiple-point velocity measurements using laser-induced iodine fluorescence,” Opt. Lett. 8, 51–53 (1983).
  3. G. Grünefeld, A. Gräber, A. Diekmann, S. Krüger, and P. Andresen, “Measurement system for simultaneous species densities, temperature, and velocity double-pulse measurements in turbulent hydrogen flames,” Combust. Sci. Technol. 135, 135–152 (1998).
  4. B. Hiller, R. A. Booman, C. Hassa, and R. K. Hanson, “Velocity visualization in gas flows using laser-induced phosphorescence of biacetyl,” Rev. Sci. Instrum. 55, 1964–1967 (1984).
  5. B. Stier and M. M. Koochesfahani, “Molecular tagging velocimetry (MTV) measurements in gas phase flows,” Exp. Fluids 26, 297–304 (1999).
  6. J. N. Forkey, N. D. Finkelstein, W. R. Lempert, and R. B. Miles, “Demonstration and characterization of filtered Rayleigh scattering for planar velocity measurements,” AIAA J. 34, 442–448 (1996).
  7. L. R. Boedecker, “Velocity measurements by H2O photolysis and laser-induced fluorescence of OH,” Opt. Lett. 14, 473–475 (1989).
  8. L. P. Goss, T. H. Chen, D. D. Trump, B. Starka, and A. S. Nejad, “Flow-tagging velocimetry using UV-photodissociation of water vapor,” presented at the 29th Aerospace Sciences Meeting, Reno, Nev., 7–10 January 1991, AIAA-91–0355 (American Institute of Aeronautics and Astronautics, 1801 Alexander Bell Drive, Suite 500, Reston, Va., 1991).
  9. R. B. Miles and W. R. Lempert, “Quantitative flow visualization in unseeded flows,” Annu. Rev. Fluid Mech. 29, 285–326 (1997).
  10. R. W. Pitz, T. M. Brown, S. P. Nandula, P. A. Skaggs, P. A. DeBarber, M. S. Brown, and J. Segall, “Unseeded velocity measurement by ozone tagging velocimetry,” Opt. Lett. 21, 755–757 (1996).
  11. L. A. Ribarov, J. A. Wehrmeyer, F. Batliwala, R. W. Pitz, and P. A. DeBarber, “Ozone tagging velocimetry using narrow-band excimer lasers,” AIAA J. 37, 708–714 (1999).
  12. K. S. Sorbie and J. N. Murrell, “Theoretical study of the O(1D) + H2(1Σg+) reactive quenching process,” Mol. Phys. 31, 905–920 (1976).
  13. V. Staemmler and A. Palma, “CEPA calculations of potential energy surfaces for open-shell systems. IV. Photodissociation of H2O in the Ã1B1 State,” Chem. Phys. 93, 63–69 (1985).
  14. K. Watanabe and M. Zelikoff, “Absorption coefficients of water vapor in the vacuum ultraviolet,” J. Opt. Soc. Am. 43, 753–755 (1953).
  15. D. Häusler, P. Andresen, and R. Schinke, “State to state photodissociation of H2O in the first absorption band,” J. Chem. Phys. 87, 3949–3957 (1987).
  16. P. Andresen, A. Bath, W. Gröger, H. W. Lülf, G. Meijer, and J. J. ter Meulen, “Laser-induced fluorescence with tunable excimer lasers as a possible method for instantaneous temperature field measurements at high pressures: checks with an atmospheric flame,” Appl. Opt. 27, 365–378 (1988).
  17. A. E. Lutz, R. J. Kee, and J. A. Miller, “senkin: a Fortran program for predicting homgeneous gas-phase chemical kinetics with sensitivity analysis,” Sandia Rep. SAND87–8248 (Sandia National Laboratories, Livermore, Calif., 1988).
  18. J. A. Wehrmeyer, L. A. Ribarov, D. A. Oguss, F. Batliwala, R. W. Pitz, and P. A. DeBarber, “Flow tagging velocimetry for low- and high-temperature flow fields,” presented at the 37th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nev., 11–14 January 1999, AIAA paper 99–0646 (American Institute of Aeronautics and Astronautics, 1801 Alexander Bell Drive, Suite 500, Reston, Va., 1999).
  19. M. C. van Hemert and R. van Harrevelt, Leiden Institute of Chemistry, Gorlaeus Laboratories, P.O. Box 9502, 2300 R A Leiden, The Netherlands (personal communication, 1999).
  20. G.-J. Kroes, E. F. van Dishoeck, R. A. Beärda, and M. C. van Hemert, “Photodissociation of CH2. II. Three-dimensional wave packet calculations on dissociation through the first excited triplet state,” J. Chem. Phys. 99, 228–236 (1993).
  21. O. Polyansky, P. Jensen, and J. Tennyson, “The potential energy surface of H2O,” J. Chem. Phys. 105, 6490–6497 (1996).
  22. R. Miles, W. Lempert, and B. Zhang, “Turbulent structure measurements by RELIEF flow tagging,” Fluid Dyn. Res. 8, No. 1, 9–17 (1991).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited