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Applied Optics

Applied Optics


  • Vol. 27, Iss. 1 — Jan. 1, 1988
  • pp: 33–48

Simultaneous planar measurements of velocity and pressure fields in gas flows using laser-induced fluorescence

Bernhard Hiller and Ronald K. Hanson  »View Author Affiliations

Applied Optics, Vol. 27, Issue 1, pp. 33-48 (1988)

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The development of a nonintrusive spectroscopic technique is reported which permits simultaneous spatially resolved measurements of two velocity components and pressure in a plane of a compressible gaseous flow field. The technique is based on the detection of fluorescence from an absorption line excited with a narrow-bandwidth laser. Doppler shift and pressure broadening of the line are exploited to extract velocity and pressure information, respectively. The fluorescence is detected at a 90° angle with an image-intensified 100 × 100 element photodiode-array camera which is interfaced with a laboratory computer. Results of the implementation in a Mach 1.5 underexpanded supersonic jet are presented.

© 1988 Optical Society of America

Original Manuscript: June 19, 1987
Published: January 1, 1988

Bernhard Hiller and Ronald K. Hanson, "Simultaneous planar measurements of velocity and pressure fields in gas flows using laser-induced fluorescence," Appl. Opt. 27, 33-48 (1988)

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