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Optics Letters

Optics Letters


  • Vol. 14, Iss. 16 — Aug. 15, 1989
  • pp: 850–852

Injectant mole-fraction imaging in compressible mixing flows using planar laser-induced iodine fluorescence

Roy J. Hartfield, Jr., John D. Abbitt, III, and James C. McDaniel  »View Author Affiliations

Optics Letters, Vol. 14, Issue 16, pp. 850-852 (1989)

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A technique is described for imaging the injectant mole-fraction distribution in nonreacting compressible mixing flow fields. Planar fluorescence from iodine, seeded into air, is induced by a broadband argon-ion laser and collected using an intensified charge-injection-device array camera. The technique eliminates the thermodynamic dependence of the iodine fluorescence in the compressible flow field by taking the ratio of two images collected with identical thermodynamic flow conditions but different iodine seeding conditions. The resulting images are, to our knowledge, the first quantitative planar measurements of mole-fraction distributions in a nonreacting compressible flow field and allow mixing to be studied directly.

© 1989 Optical Society of America

Original Manuscript: January 27, 1989
Manuscript Accepted: May 18, 1989
Published: August 15, 1989

Roy J. Hartfield, John D. Abbitt, and James C. McDaniel, "Injectant mole-fraction imaging in compressible mixing flows using planar laser-induced iodine fluorescence," Opt. Lett. 14, 850-852 (1989)

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  1. N. L. Rapagnani, S. L. Davis, Lasers Appl. 5, 127 (1985).
  2. B. Hiller, R. K. Hanson, Appl. Opt. 27, 33 (1988). [CrossRef] [PubMed]
  3. J. C. McDaniel, AIAA Paper 83-0049 (American Institute of Aeronautics and Astronautics, New York, 1983).
  4. J. C. McDaniel, J. Graves, J. Propulsion Power 4, 591 (1988). [CrossRef]
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  6. D. G. Fletcher, “Spatially-resolved, nonintrusive measurements in a nonreacting scramjet combustor using laser-induced iodine fluorescence,” Ph.D. dissertation (University of Virginia, Charlottesville, Va., 1989).
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