Simultaneous whole-field measurements of velocity and concentration fields using a combination of MTV and LIF

被引：40

作者：

Koochesfahani, M ^{[1
]}

Cohn, R ^{[1
]}

McKinnon, C ^{[1
]}

机构：

[1] Michigan State Univ, Dept Mech Engn, E Lansing, MI 48824 USA

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2000年 / 11卷 / 09期

关键词：

fluid flow velocity; passive scalar concentration; molecular tagging velocimetry; laser induced fluorescence; optical diagnostics; turbulent mixing layers; wakes;

D O I：

10.1088/0957-0233/11/9/306

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new technique for the simultaneous measurement of velocity and concentration fields is described. We describe here applications in liquid-phase Rows, but the methodology can be extended to gas-phase flows with appropriate tracers. In this single-laser, two-tracer approach, molecular tagging velocimetry (MTV) based on the use of a phosphorescent compound is combined with laser induced fluorescence (LIF) using fluorescein as a tracer Results show that one can design experiments with minimal cross-talk between the LIF and MTV signals. Applications of the simultaneous MTV-LIF technique are demonstrated by performing simultaneous flow visualization and vorticity measurements in a low Reynolds number forced wake and simultaneous velocity-concentration measurements in a turbulent mixing layer. Preliminary data on the mean and RMS fluctuation of velocity and concentration are presented, together with the correlation between velocity and concentration fluctuations.

引用

页码：1289 / 1300

页数：12

共 53 条

[11] FALCO RE, 1987, P SOC PHOTO-OPT INS, V814, P706
[12] FALCO RE, 1993, PARTICULATE 2 PHASE, P59
[13] FIEDLER H, 1974, ADV GEOPHYSICS A, V18, P93
[14] Simultaneous scaler/velocity field measurements in turbulent gas-phase flows
Frank, JH
Lyons, KM
Long, MB
[J]. COMBUSTION AND FLAME, 1996, 107 (1-2) : 1 - 12
[15] Molecular tagging velocimetry and other novel applications of a new phosphorescent supramolecule
Gendrich, CP
Koochesfahani, MM
Nocera, DG
[J]. EXPERIMENTS IN FLUIDS, 1997, 23 (05) : 361 - 372
[16] A spatial correlation technique for estimating velocity fields using molecular tagging velocimetry (MTV)
Gendrich, CP
Koochesfahani, MM
[J]. EXPERIMENTS IN FLUIDS, 1996, 22 (01) : 67 - 77
[17] GRISSINO AS, 1999, P 3 INT WORKSH PIV 9, P591
[18] Substrate induced phosphorescence from cyclodextrin center dot lumophore host-guest complexes
Hartmann, WK
Gray, MHB
Ponce, A
Nocera, DG
Wong, PA
[J]. INORGANICA CHIMICA ACTA, 1996, 243 (1-2) : 239 - 248
[19] HISHIDA K, 1999, P 3 INT WORKSH PIV 9, P21
[20] Keagy W.R., 1949, P HEAT TRANSFER FLUI, V1, P89

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