Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

For Online Access

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2005, Volume12

Issue 4

142 pages

DOI: 10.1615/JFlowVisImageProc.v12.i4

Issue price - $154.00

Irina Robu
Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202

Erhard W. Rothe
Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, MI 48202

We describe the creation of sets of 633-nm beamlets and their bending by supercritical СО₂. Small temperature gradients within a cell that contains the fluid resulted in large density gradients that, in turn, are almost proportional to gradients of the optical refractive index. The paths of such beamlets can be described quantitatively. Beamlets were made with a He−Ne laser-beam that impinged on an array of apertures. The transmitted light forms Fraunhofer diffraction patterns whose shapes depend upon the arrangement of the apertures. The beamlets traversed a 7.62-cm-long cell and were deflected downward to a degree that depended upon the spatial distribution of CO₂ density. The deflection is as much as 0.25 m at a distance of 2 m.

DOI: 10.1615/JFlowVisImageProc.v12.i4.40 Download article, 377-388 pages

Article price - $35.00

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