
Proceedings Paper
High speed digital holographic interferometry for hypersonic flow visualizationFormat | Member Price | Non-Member Price |
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Paper Abstract
Optical imaging techniques have played a major role in understanding the flow dynamics of varieties of
fluid flows, particularly in the study of hypersonic flows. Schlieren and shadowgraph techniques have been the flow
diagnostic tools for the investigation of compressible flows since more than a century. However these techniques
provide only the qualitative information about the flow field. Other optical techniques such as holographic
interferometry and laser induced fluorescence (LIF) have been used extensively for extracting quantitative
information about the high speed flows. In this paper we present the application of digital holographic
interferometry (DHI) technique integrated with short duration hypersonic shock tunnel facility having 1 ms test
time, for quantitative flow visualization. Dynamics of the flow fields in hypersonic/supersonic speeds around
different test models is visualized with DHI using a high-speed digital camera (0.2 million fps). These visualization
results are compared with schlieren visualization and CFD simulation results. Fringe analysis is carried out to
estimate the density of the flow field.
Paper Details
Date Published: 22 June 2013
PDF: 7 pages
Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 87690C (22 June 2013); doi: 10.1117/12.2020767
Published in SPIE Proceedings Vol. 8769:
International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013)
Chenggen Quan; Kemao Qian; Anand Asundi, Editor(s)
PDF: 7 pages
Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 87690C (22 June 2013); doi: 10.1117/12.2020767
Show Author Affiliations
K. P. J. Reddy, Indian Institute of Science (India)
Published in SPIE Proceedings Vol. 8769:
International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013)
Chenggen Quan; Kemao Qian; Anand Asundi, Editor(s)
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