DIGITAL HOLOGRAPHIC-INTERFEROMETRY IN HIGH-SPEED FLOW RESEARCH
UNSPECIFIED. (1992) DIGITAL HOLOGRAPHIC-INTERFEROMETRY IN HIGH-SPEED FLOW RESEARCH. EXPERIMENTS IN FLUIDS, 13 (1). pp. 56-62. ISSN 0723-4864Full text not available from this repository.
A dual reference beam, plane wave, digital holographic interferometric system has been developed. It has also been applied as a non-intrusive optical diagnostic tool to a high speed flow. Quantitative density data has been extracted automatically by first generating phase-stepped interferograms. These were then digitized via a charge coupled device (CCD) camera and digitally post-processed within the memory of a computer. The results obtained have mapped an instantaneous 3-D density distribution of an unsteady flow field onto a 2-D projection plane. They show quantitatively the interaction between a shock wave and a turbulent boundary layer. A description has also been made showing how the dual reference beam technique can be extended to provide a quantitative density measurement of turbulent and unsteady flow structures.
|Item Type:||Journal Article|
|Subjects:||T Technology > TJ Mechanical engineering and machinery|
|Journal or Publication Title:||EXPERIMENTS IN FLUIDS|
|Number of Pages:||7|
|Page Range:||pp. 56-62|
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