Abstract

A high-speed method to remove blurring effects caused by multiple scattering in planar laser images of two-phase flows is demonstrated. The technique is based on structured illumination and is for the first time to our knowledge applied on a dynamic medium. As structured illumination requires three successive images to be recorded and to freeze the flow motion in time, a high-speed laser and imaging system is employed. We show that by using a time delay of 55μs between the images a single-shot representation of a dilute flow of water droplets can be achieved. By having an additional inner stream with known structure and composition, the efficiency of the method is quantitatively evaluated, showing an increase from 58% to 93% in image contrast. Such an improvement allows more accurate analysis and interpretation of scattering two-phase flow images.

© 2008 Optical Society of America

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References

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2007 (1)

2005 (1)

R. J. Adrian, Exp. Fluids 39, 159 (2005).
[CrossRef]

2003 (1)

R. Domann and Y. Hardalupas, Part. Part. Syst. Charact. 20, 209 (2003).
[CrossRef]

2002 (2)

A. Serpenguzel, S. Kucuksenel, and R. K. Chang, Opt. Express 10, 1118 (2002).
[PubMed]

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

2001 (1)

2000 (1)

1997 (1)

1995 (1)

R. Bazile and D. Stepowski, Exp. Fluids 20, 1 (1995).
[CrossRef]

Abu-Gharbieh, R.

Adrian, R. J.

R. J. Adrian, Exp. Fluids 39, 159 (2005).
[CrossRef]

Bazile, R.

R. Bazile and D. Stepowski, Exp. Fluids 20, 1 (1995).
[CrossRef]

Berrocal, E.

E. Berrocal, Ph.D. dissertation (Cranfield University, 2006).

Breuninger, T.

Chang, R. K.

Cole, M. J.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Domann, R.

R. Domann and Y. Hardalupas, Part. Part. Syst. Charact. 20, 209 (2003).
[CrossRef]

Dowling, K.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Forsth, M.

French, P. M. W.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Greger, K.

Gu, Y.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Gustavsson, T.

Hardalupas, Y.

R. Domann and Y. Hardalupas, Part. Part. Syst. Charact. 20, 209 (2003).
[CrossRef]

Jones, R.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Juškaitis, R.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Juskatitis, R.

Karlstrom, A.

Kucuksenel, S.

Lévêque-Fort, S.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Lever, M. J.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Neil, M. A. A.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

M. A. A. Neil, R. Juskatitis, and T. Wilson, Opt. Lett. 22, 1905 (1997).
[CrossRef]

Persson, J. L.

Rosen, A.

Serpenguzel, A.

Sick, V.

Siegel, J.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Stelzer, E. H. K.

Stepowski, D.

R. Bazile and D. Stepowski, Exp. Fluids 20, 1 (1995).
[CrossRef]

Stojkovic, B.

Sucharov, L. O. D.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Webb, S. E. D.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Wilson, T.

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

M. A. A. Neil, R. Juskatitis, and T. Wilson, Opt. Lett. 22, 1905 (1997).
[CrossRef]

Appl. Opt. (2)

Exp. Fluids (2)

R. J. Adrian, Exp. Fluids 39, 159 (2005).
[CrossRef]

R. Bazile and D. Stepowski, Exp. Fluids 20, 1 (1995).
[CrossRef]

Opt. Express (1)

Opt. Lett. (2)

Part. Part. Syst. Charact. (1)

R. Domann and Y. Hardalupas, Part. Part. Syst. Charact. 20, 209 (2003).
[CrossRef]

Rev. Sci. Instrum. (1)

S. E. D. Webb, Y. Gu, S. Lévêque-Fort, J. Siegel, M. J. Cole, K. Dowling, R. Jones, P. M. W. French, M. A. A. Neil, R. Juškaitis, L. O. D. Sucharov, T. Wilson, and M. J. Lever, Rev. Sci. Instrum. 73, 1898 (2002).
[CrossRef]

Other (1)

E. Berrocal, Ph.D. dissertation (Cranfield University, 2006).

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Figures (2)

Fig. 1
Fig. 1

Illustration of the imaging part of the experimental setup together with the three successive recorded images ( I 1 , I 2 , and I 3 ).

Fig. 2
Fig. 2

Comparison between I C and I S . In (a) and (b) a single nebulizer was used while in (c) and (d) three additional nebulizers were added in front of the camera. The estimated contrast value is indicated in the top left corner of each image. The cross section, integrated between 0 mm < Y < 6 mm is shown below each picture, where the averaged maximum and minimum values are also indicated.

Equations (4)

Equations on this page are rendered with MathJax. Learn more.

I ( x , y ) = I C + I S cos ( 2 π v y + ϕ 0 ) .
I S = 2 3 [ ( I 1 I 2 ) 2 + ( I 1 I 3 ) 2 + ( I 2 I 3 ) 2 ] 1 2 ,
I C = I 1 + I 2 + I 3 3 .
C = I max I min I max + I min ,

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