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Proceedings Paper

Animated visualization of shock-wave flow fields for dynamic comparison between experiment and computational prediction
Author(s): Holger Babinsky; Ji-Ming Yang; Kazuyoshi Takayama
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Paper Abstract

Through the use of digital image processing and advanced shock tube technology, a more stringent comparison of experimental data with computational predictions can be achieved. Holographic interferometry is used to visualize density distributions of shock wave flows experimentally. Experiment-like images are created from numerical data using the optical parameters of the experiment. In the case of axisymmetric flow a ray-tracing algorithm is incorporated to produce the correct images. Where many dynamic processes, such as multiple shock reflections, occur the use of a single image is not sufficient. For these cases a specially designed shock tube is used in combination with a computer controlled trigger to yield images obtained at constant experimental conditions but different moments in the development of the flow. This data is combined into animation sequences. This presentation of results provides a better insight into the flow physics and CFD code behavior. The combination of a physical interpretation of numerical data and a dynamic comparison of images has been found to greatly enhance the quality of CFD code validation with the experiment.

Paper Details

Date Published: 7 April 1995
PDF: 7 pages
Proc. SPIE 2410, Visual Data Exploration and Analysis II, (7 April 1995); doi: 10.1117/12.205941
Show Author Affiliations
Holger Babinsky, Tohoku Univ. (Japan)
Ji-Ming Yang, Tohoku Univ. (Japan)
Kazuyoshi Takayama, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 2410:
Visual Data Exploration and Analysis II
Richard N. Ellson; Georges G. Grinstein; Robert F. Erbacher, Editor(s)

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