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References

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  1. See, for example, B. M. Watrasiewicz, M. J. Rudd, Laser Doppler Measurements (Butterworths, London, 1976); F. Durst, A. Melling, J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).
  2. J. M. Burch, J. M. J. Tokarski, Opt. Acta 15, 101 (1968).
  3. See, for example, L. Celaya, J. M. Jonathan, S. Mallick, Opt. Commun. 18, 496 (1976).
    [CrossRef]

1976 (1)

See, for example, L. Celaya, J. M. Jonathan, S. Mallick, Opt. Commun. 18, 496 (1976).
[CrossRef]

1968 (1)

J. M. Burch, J. M. J. Tokarski, Opt. Acta 15, 101 (1968).

Burch, J. M.

J. M. Burch, J. M. J. Tokarski, Opt. Acta 15, 101 (1968).

Celaya, L.

See, for example, L. Celaya, J. M. Jonathan, S. Mallick, Opt. Commun. 18, 496 (1976).
[CrossRef]

Jonathan, J. M.

See, for example, L. Celaya, J. M. Jonathan, S. Mallick, Opt. Commun. 18, 496 (1976).
[CrossRef]

Mallick, S.

See, for example, L. Celaya, J. M. Jonathan, S. Mallick, Opt. Commun. 18, 496 (1976).
[CrossRef]

Rudd, M. J.

See, for example, B. M. Watrasiewicz, M. J. Rudd, Laser Doppler Measurements (Butterworths, London, 1976); F. Durst, A. Melling, J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).

Tokarski, J. M. J.

J. M. Burch, J. M. J. Tokarski, Opt. Acta 15, 101 (1968).

Watrasiewicz, B. M.

See, for example, B. M. Watrasiewicz, M. J. Rudd, Laser Doppler Measurements (Butterworths, London, 1976); F. Durst, A. Melling, J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).

Opt. Acta (1)

J. M. Burch, J. M. J. Tokarski, Opt. Acta 15, 101 (1968).

Opt. Commun. (1)

See, for example, L. Celaya, J. M. Jonathan, S. Mallick, Opt. Commun. 18, 496 (1976).
[CrossRef]

Other (1)

See, for example, B. M. Watrasiewicz, M. J. Rudd, Laser Doppler Measurements (Butterworths, London, 1976); F. Durst, A. Melling, J. H. Whitelaw, Principles and Practice of Laser Doppler Anemometry (Academic, London, 1976).

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Figures (4)

Fig. 1
Fig. 1

Geometry for recording the speckle pattern generated by the polystyrene spheres seeded in the fluid. The photographic plate is placed in the xy plane.

Fig. 2
Fig. 2

Setup for observing the photographic plate with a spatial filter.

Fig. 3
Fig. 3

The solid curve represents the theoretical Eq. (5). The experimental values of velocity as determined by a point by point analysis of the photographic plate are indicated by crosses. Solid circles represent the experimental values obtained by the spatial filtering method of observation.

Fig. 4
Fig. 4

A photograph of the flow pattern. The fringes in the vicinity of the cell wall where the light enters have a better contrast than those in the vicinity of the exit face. This is due to the fact that as light propagates through the diffusing fluid, it progressively looses its spatial coherence.

Equations (7)

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I ( ξ 1 ) = cos 2 [ π λ f ( V T ) · ξ 1 ] ,
ξ 1 = R cos ( ϕ - θ ) ,
A ( R , ϕ ) = cos [ π λ f ( V T ) R cos ( ϕ - θ ) ] = cos { π T R λ f [ V cos ( ϕ - θ ) } .
I ( x , y ) = cos 2 { π T R λ f [ V cos ( ϕ - θ ) ] } .
V ( x ) = V max ( 1 - x 2 r 2 ) .
π T R λ f · V = n π ,             ( n = 0 , 1 , 2 ) .
π T R λ f · V = ( n + 1 2 ) π .

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