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Scientific Visualization
| Issue Year: | 2013 |
| Quarter: | 3 |
| Volume: | 5 |
| Number: | 3 |
| Pages: | 1 - 16 |
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| Article Name: |
INTERACTION OF CFD AND EXPERIMENTAL FLOW VISUALIZATION |
| Author: |
I. Znamenskaya (Russian Federation) |
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The paper is recommended by program committee of 12th International Conference OMFI – 2013 (Optical Methods of Flow Investigations). |
| Address: |
I. Znamenskaya
znamen@phys.msu.ru
Lomonosov Moscow State University, Moscow, Russian Federation |
| Abstract: |
An analysis of the opportunities offered by the use of comparison of the experimental flow visualization, CFD visualization. It is shown that due to progress in digital technologies in flow visualization and image processing on the one hand and methods for CFD visualization the other hand, it became possible to conduct a direct comparison of results. Briefly main flow visualization methods are revised: optical methods based on the refraction, dispersion, absorption, re-emission, polarization, methods of surface visualization; tracing (including PIV versions). Examples of comparison of numerical and experimental flow visualization, produced by different imaging techniques are shown: shadow, PSP images, BOS, PIV images, visualization by discharge, etc. It is noted that the accuracy of optical methods, based on refraction is limited by the accuracy of the optical system and the degree of flow deviation from the 2D configuration.
As an example of comparison of numerical and experimental patterns use, an approach is described to analyze the flows with a pulse energy input based on the matching of shadow, BOS and CFD images of visualized shock-wave configurations. We determined the value of energy deposited in a pulsed electric discharge, its localization in the flow area, including supersonic. It is shown that the comparison of digital numerical and experimental flow fields can be an effective tool for the analysis of hydrodynamic processes, based on the results of experimental and CFD studies of complex flows. |
| Language: |
Russian |
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