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Simultaneous concentration and velocity measurements using combined laser-induced fluorescence and laser Doppler velocimetry: Application to turbulent transport

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Abstract

This paper describes the implementation of an optical technique, allowing to perform concentration and velocity measurements simultaneously and at the same point. This method is based on the coupling of laser-induced fluorescence of rhodamine B, applied to the determination of local concentration, and laser Doppler velocimetry. The method developed provides an accurate measurement of the concentration-velocity cross-correlation. The latter is a parameter linked to the eddy diffusivity tensor of a passive contaminant. This method was tested with a turbulent submerged free jet and it allowed the determination of the mean field of concentration and velocity, the concentration-velocity cross-correlation, and the local eddy diffusivity.

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Abbreviations

C :

molar concentration

c :

fluctuating part of the concentration

\(\bar C\) :

mean value of the concentration

\(\bar c\bar u\) :

concentration-velocity cross-correlation

D :

molecular diffusivity

(D eddy) ij :

eddy diffusivity tensor

I abs :

absorbed intensity

I e :

local incident intensity

K opt :

optical constant

N :

number of samples

r c :

half-width radius for the concentration profile

r v :

half-width radius for the velocity profile

S f :

fluorescence signal

Sc :

Schmidt number

V c :

collection volume

U :

velocity

U e :

flow velocity in the channel

U i :

injection velocity

ɛ :

kinetic energy dissipation rate

ɛ 1 :

molar extinction coefficient for the laser radiation (in m2mol−1l−1)

ɛ 2 :

molar extinction coefficient for the fluorescence signal (in m2mol−1l−1)

Φ :

quantum yield

η c :

Batchelor scale

η k :

Kolmogorov scale

v :

kinematic viscosity

⋆:

normalized values

References

  • Arcoumanis C; McGuirk JJ; Palma JMLM (1990) On the use of fluorescent dyes for concentration measurements in water flows. Technical notes. Exp Fluids 10: 177–180

    Google Scholar 

  • Batchelor GK (1959) Small-scale variation of convected quantities like temperature in turbulent fluid. Part 1. J Fluid Mech 5: 113–133

    Google Scholar 

  • Bennani A; Lievre J; Gence JN (1990) On the comparison of measurement methods for concentration fluctuations based on conductimetry and laser-induced fluorescence in turbulent water flows. CR Acad Sci Paris 310, Serie II, pp. 453–457

    Google Scholar 

  • Chevray R; Tutu NK ( 1978) Intermittency and preferential transport of heat in a round jet. J Fluid Mech 88: 133–160

    Google Scholar 

  • Dibble RW; Kollmann W; Schefer RW (1984) Conserved scalar fluxes measured in a turbulent nonpremixed flame by combined laser Doppler velocimetry and laser Raman scattering. Combust. Flame 55: 307–321

    Google Scholar 

  • Forstall W; Gaylord EW (1955) Momentum and mass transfer in a submerged water jet. J Appl Mech 22: 161–164

    Google Scholar 

  • Forstall W; Shapiro AH (1950) Momentum and mass transfer in coaxial gas jets. J Appl Mech 17: 399–408

    Google Scholar 

  • Gaskey S; Vacus P; Villermaux J; André JC (1990) A method for the study of turbulent mixing using fluorescence spectroscopy. Exp Fluids 9: 137–147

    Google Scholar 

  • Hiller B; McDaniel JC; Rea EC; Hanson RK (1983) Laser-induced fluorescence technique for velocity-field measurements in subsonic gas flows. Opt Letters 8:

  • Hinze JO (1975) Turbulence. McGraw-Hill

  • Kotsovinos NE (1977) Plane turbulent buoyant jets. Part 2. Turbulence structure. J Fluid Mech 81: 45–62

    Google Scholar 

  • Lemoine F; Leporcq B (1992) Optical pressure measurement using laser induced iodine fluorescence. Rech. Aerospatiale 1: 51–59

    Google Scholar 

  • Max J (1972) Methodes et techniques de traitement du signal et aplications aux measures physiques. Masson & Cie

  • Nakajima T; Ikeda Y; Utsunomiya M (1993) Simultaneous measurement of velocity and temperature of water using FLDV and fluorescence. Scripta Technica, Inc. pp. 528–542

  • Owen FK (1976) Simultaneous laser measurements of instantaneous velocity and concentration in turbulent mixing flows. AGARD Conf Proc 193: 27–1–27–7

    Google Scholar 

  • Papanicolaou PN; List EJ (1988) Investigation of round vertical turbulent buoyant jets. J Fluid Mech 195: 341–391

    Google Scholar 

  • Rosensweig RE; Hottel HC; Williams GC (1961) Smoke-scattered light measurement of turbulent concentration fluctuations. Chem Eng Sci 12: 111–129

    Google Scholar 

  • Shaughnessy EJ; Morton JB (1977) Laser light-scattering measurements of particle concentration in a turbulent jet. J Fluid Mech 80: 129–148

    Google Scholar 

  • Walker DA (1987) A fluorescence technique for measurement of concentration in mixing liquids. J Phys E Sci Instr 20: 217–224

    Google Scholar 

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Authors and Affiliations

  1. LEMTA, 2, Avenue de la Forêt de Haye, BP 160, F-54504, Vandoeuvre-les-Nancy Cedex, France

    F. Lemoine, M. Wolff & M. Lebouche

Authors
  1. F. Lemoine
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  2. M. Wolff
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  3. M. Lebouche
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Lemoine, F., Wolff, M. & Lebouche, M. Simultaneous concentration and velocity measurements using combined laser-induced fluorescence and laser Doppler velocimetry: Application to turbulent transport. Experiments in Fluids 20, 319–327 (1996). https://doi.org/10.1007/BF00191013

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  • DOI: https://doi.org/10.1007/BF00191013

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