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A Novel Technique for Free-Surface Elevation Mapping

Zhang, X. and Dabiri, D. and Gharib, M. (1994) A Novel Technique for Free-Surface Elevation Mapping. Physics of Fluids, 6 (9). S11-S11. ISSN 1070-6631.

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Recently, there has been an increased interest in the interaction of vortices and turbulence with free surfaces. A central issue in understanding the free surface turbulence is to relate the surface elevation to the near-surface flow field. In that respect, the lack of a global surface mapping technique which could reveal the temporal evolution of the surface elevation has prevented the progress of viable research. Therefore, in this abstract we present a new technique, integrating optics, colorimetry, and digital image processing, to measure the three-dimensional surface elevation for a time-evolving flow. The basic idea is to color code the surface slopes by light beams of different colors. This is achieved by first using a diffused white light source to illuminate a specially designed color palette.

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Additional Information:© 1994 American Institute of Physics.
Issue or Number:9
Record Number:CaltechAUTHORS:20130924-134326933
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41511
Deposited By: Tony Diaz
Deposited On:24 Sep 2013 20:51
Last Modified:03 Oct 2019 05:49

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