Abstract

A two-wavelength absorption/scattering measurement technique is described whereby vapor concentrations inside sprays and aerosols are probed nonintrusively. The technique has been applied to measure the vapor concentration inside an n-heptane fuel spray.

© 1981 Optical Society of America

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References

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  1. M. Labowsky, Chem. Eng. Sci. 31, 803 (1976).
  2. M. Labowsky, Combust. Sci. Technol. 18, 148 (1978).
  3. L. C. Haselman, C. K. Westbrook, SAE Paper 780318 (1978).
  4. J. M. Tishkoff, Int. J. Heat Mass Transfer 22, 1407 (1979).
  5. N. A. Chigier, C. McCreath, Acta Astronaut. 1, 687 (1974).
  6. M. Labowsky, D. Rosner, MACS Paper, San Francisco, California (1976).
  7. N. A. Chigier, Prog. Energy Combust. Sci. 2, 1 (1976).
  8. H. H. Chiu, T. M. Liu, Combust. Sci. Technol. 17, 127 (1977).
  9. H. H. Chin, R. K. Ahluwalia, B. Koh, E. J. Croke, Paper 78–75, AIAA 16th Aerospace Sciences Meeting (1978).
  10. M. Labowsky, paper presented at the Combustion Institute Central States Section Meeting (1978).
  11. T. A. Brzustowski, E. M. Twardus, W. Wojcicki, A. Sobiesiak, AIAA J. 17, 1234 (1979).
  12. J. J. Sangiovanni, L. G. Dodge, Seventeenth International Symposium on Combustion, 455 (1979).
  13. J. M. Tishkoff, D. C. Hammond, A. R. Chraplyvy, ASME Paper 80 WA/HT-35 (1980).
  14. D. C. Hammond, Appl. Opt. 20, 493 (1981).
  15. J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).
  16. W. Lo, NASA Conference Publication 2138, Proceedings of the International Conference held at Williamsburg, Virginia, 33 (1980).

1981 (1)

1979 (3)

J. M. Tishkoff, Int. J. Heat Mass Transfer 22, 1407 (1979).

T. A. Brzustowski, E. M. Twardus, W. Wojcicki, A. Sobiesiak, AIAA J. 17, 1234 (1979).

J. J. Sangiovanni, L. G. Dodge, Seventeenth International Symposium on Combustion, 455 (1979).

1978 (2)

M. Labowsky, Combust. Sci. Technol. 18, 148 (1978).

H. H. Chin, R. K. Ahluwalia, B. Koh, E. J. Croke, Paper 78–75, AIAA 16th Aerospace Sciences Meeting (1978).

1977 (2)

J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).

H. H. Chiu, T. M. Liu, Combust. Sci. Technol. 17, 127 (1977).

1976 (2)

N. A. Chigier, Prog. Energy Combust. Sci. 2, 1 (1976).

M. Labowsky, Chem. Eng. Sci. 31, 803 (1976).

1974 (1)

N. A. Chigier, C. McCreath, Acta Astronaut. 1, 687 (1974).

Abbot, D.

J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).

Ahluwalia, R. K.

H. H. Chin, R. K. Ahluwalia, B. Koh, E. J. Croke, Paper 78–75, AIAA 16th Aerospace Sciences Meeting (1978).

Beer, J. M.

J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).

Brzustowski, T. A.

T. A. Brzustowski, E. M. Twardus, W. Wojcicki, A. Sobiesiak, AIAA J. 17, 1234 (1979).

Chigier, N. A.

N. A. Chigier, Prog. Energy Combust. Sci. 2, 1 (1976).

N. A. Chigier, C. McCreath, Acta Astronaut. 1, 687 (1974).

Chin, H. H.

H. H. Chin, R. K. Ahluwalia, B. Koh, E. J. Croke, Paper 78–75, AIAA 16th Aerospace Sciences Meeting (1978).

Chiu, H. H.

H. H. Chiu, T. M. Liu, Combust. Sci. Technol. 17, 127 (1977).

Chraplyvy, A. R.

J. M. Tishkoff, D. C. Hammond, A. R. Chraplyvy, ASME Paper 80 WA/HT-35 (1980).

Croke, E. J.

H. H. Chin, R. K. Ahluwalia, B. Koh, E. J. Croke, Paper 78–75, AIAA 16th Aerospace Sciences Meeting (1978).

Dodge, L. G.

J. J. Sangiovanni, L. G. Dodge, Seventeenth International Symposium on Combustion, 455 (1979).

Hammond, D. C.

D. C. Hammond, Appl. Opt. 20, 493 (1981).

J. M. Tishkoff, D. C. Hammond, A. R. Chraplyvy, ASME Paper 80 WA/HT-35 (1980).

Haselman, L. C.

L. C. Haselman, C. K. Westbrook, SAE Paper 780318 (1978).

Koh, B.

H. H. Chin, R. K. Ahluwalia, B. Koh, E. J. Croke, Paper 78–75, AIAA 16th Aerospace Sciences Meeting (1978).

Labowsky, M.

M. Labowsky, Combust. Sci. Technol. 18, 148 (1978).

M. Labowsky, Chem. Eng. Sci. 31, 803 (1976).

M. Labowsky, paper presented at the Combustion Institute Central States Section Meeting (1978).

M. Labowsky, D. Rosner, MACS Paper, San Francisco, California (1976).

Liu, T. M.

H. H. Chiu, T. M. Liu, Combust. Sci. Technol. 17, 127 (1977).

Lo, W.

W. Lo, NASA Conference Publication 2138, Proceedings of the International Conference held at Williamsburg, Virginia, 33 (1980).

McCreath, C.

N. A. Chigier, C. McCreath, Acta Astronaut. 1, 687 (1974).

McGreath, G. C.

J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).

Rosner, D.

M. Labowsky, D. Rosner, MACS Paper, San Francisco, California (1976).

Sangiovanni, J. J.

J. J. Sangiovanni, L. G. Dodge, Seventeenth International Symposium on Combustion, 455 (1979).

Sobiesiak, A.

T. A. Brzustowski, E. M. Twardus, W. Wojcicki, A. Sobiesiak, AIAA J. 17, 1234 (1979).

Swithenbank, J.

J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).

Taylor, D. S.

J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).

Tishkoff, J. M.

J. M. Tishkoff, Int. J. Heat Mass Transfer 22, 1407 (1979).

J. M. Tishkoff, D. C. Hammond, A. R. Chraplyvy, ASME Paper 80 WA/HT-35 (1980).

Twardus, E. M.

T. A. Brzustowski, E. M. Twardus, W. Wojcicki, A. Sobiesiak, AIAA J. 17, 1234 (1979).

Westbrook, C. K.

L. C. Haselman, C. K. Westbrook, SAE Paper 780318 (1978).

Wojcicki, W.

T. A. Brzustowski, E. M. Twardus, W. Wojcicki, A. Sobiesiak, AIAA J. 17, 1234 (1979).

Acta Astronaut. (1)

N. A. Chigier, C. McCreath, Acta Astronaut. 1, 687 (1974).

AIAA 16th Aerospace Sciences Meeting (1)

H. H. Chin, R. K. Ahluwalia, B. Koh, E. J. Croke, Paper 78–75, AIAA 16th Aerospace Sciences Meeting (1978).

AIAA J. (1)

T. A. Brzustowski, E. M. Twardus, W. Wojcicki, A. Sobiesiak, AIAA J. 17, 1234 (1979).

Appl. Opt. (1)

Chem. Eng. Sci. (1)

M. Labowsky, Chem. Eng. Sci. 31, 803 (1976).

Combust. Sci. Technol. (2)

M. Labowsky, Combust. Sci. Technol. 18, 148 (1978).

H. H. Chiu, T. M. Liu, Combust. Sci. Technol. 17, 127 (1977).

Int. J. Heat Mass Transfer (1)

J. M. Tishkoff, Int. J. Heat Mass Transfer 22, 1407 (1979).

Prog. Astronaut. Aeronaut. (1)

J. Swithenbank, J. M. Beer, D. S. Taylor, D. Abbot, G. C. McGreath, Prog. Astronaut. Aeronaut. 53 (1977).

Prog. Energy Combust. Sci. (1)

N. A. Chigier, Prog. Energy Combust. Sci. 2, 1 (1976).

Seventeenth International Symposium on Combustion (1)

J. J. Sangiovanni, L. G. Dodge, Seventeenth International Symposium on Combustion, 455 (1979).

Other (5)

J. M. Tishkoff, D. C. Hammond, A. R. Chraplyvy, ASME Paper 80 WA/HT-35 (1980).

W. Lo, NASA Conference Publication 2138, Proceedings of the International Conference held at Williamsburg, Virginia, 33 (1980).

M. Labowsky, paper presented at the Combustion Institute Central States Section Meeting (1978).

L. C. Haselman, C. K. Westbrook, SAE Paper 780318 (1978).

M. Labowsky, D. Rosner, MACS Paper, San Francisco, California (1976).

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Figures (7)

Fig. 1
Fig. 1

Partition of space into concentric annuli for axisymmetric geometries. The intensities I0, I1, I2 etc. are used to deconvolute the data.

Fig. 2
Fig. 2

Schematic diagram of experimental apparatus for detecting fuel vapors in a fuel spray tunnel (top view).

Fig. 3
Fig. 3

Schematic diagram (side view) of fuel spray and laser beam orientation. The laser can be passed through any portion of the spray by translating the nozzle.

Fig. 4
Fig. 4

Radial variation of total transmission and vapor transmission at 3.39 μm in the 25-mm axial plane of a 1.48-MPa n-heptane spray.

Fig. 5
Fig. 5

Radial variation of total transmission and vapor transmission at 3.39 μm in the 50-mm axial plane of a 1.48-MPa n-heptane spray.

Fig. 6
Fig. 6

Radial variation of the fuel vapor concentration in the 25-mm axial plane of a 1.48-MPa n-heptane spray. The arrow indicates the location of the spray edge.

Fig. 7
Fig. 7

Radial variation of the fuel vapor concentration in the 50-mm axial plane of a 1.48-MPa n-heptane spray. The arrow indicates the location of the spray edge.

Equations (14)

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

I ( λ ) = I 0 ( λ ) exp [ α ( CL ) ] exp [ E ( λ ) ] ,
E ( λ ) = LN k C k ( λ ) f k ,
E ( λ A ) = E ( λ T ) k C k ( λ A ) f k k C k ( λ T ) f k .
C 1 = 1 L 1 α ln I 1 I 0 , C 2 = 1 L 2 α ( ln I 2 I 0 + α L 12 C 1 ) , etc .
η i N i A L ij .
η = i = 1 j η i = A i 1 j N i L ij .
I j = I 0 exp [ E j ( λ ) ] .
E j ( λ ) = i = 1 j γ i ( λ ) L ij ,
γ i ( λ ) = N i k C k ( λ ) f ki .
E j ( λ ) = i = 1 j k N i L ij C k ( λ ) f ki .
E j ( λ ) = 1 A i = 1 j k η i C k ( λ ) f ki .
E j ( λ ) = 1 A k C k ( λ ) i = 1 j η i f ki .
f kM = i = 1 j η i f ki η .
E j ( λ ) = η A k C k ( λ ) f k .

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