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Applied Optics

Applied Optics


  • Vol. 44, Iss. 25 — Sep. 1, 2005
  • pp: 5286–5291

Numerical study of light scattering by a boundary-layer flow

Darek J. Bogucki and Julian A. Domaradzki  »View Author Affiliations

Applied Optics, Vol. 44, Issue 25, pp. 5286-5291 (2005)

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Temperature inhomogeneities in free, isotropic turbulence have the effect of scattering light in near-forward angles. We investigate numerically modifications of free turbulence by a rigid wall and its effect on the propagation of light through turbulence. The wall is a 5 cm optical window placed at the leading edge of an instrument towed with speeds of 0.1 and 1 m/s in free turbulence. The turbulent flow field presents inhomogeneities of an embedded passive scalar (Pr = 7, temperature in water), which are modified by the boundary layer developing on the window. We find that the developing laminar boundary layer has a negligible effect on light scattering for the investigated geometry when considered in terms of the volume-scattering function (differential cross section). This indicates that the boundary layer is not an obstacle for optical measurements of turbulence.

© 2005 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.7060) Atmospheric and oceanic optics : Turbulence

Original Manuscript: November 8, 2004
Revised Manuscript: March 16, 2005
Manuscript Accepted: March 17, 2005
Published: September 1, 2005

Darek J. Bogucki and Julian A. Domaradzki, "Numerical study of light scattering by a boundary-layer flow," Appl. Opt. 44, 5286-5291 (2005)

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