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- Title
Measurement of concentration pulsations in a shear turbulent flow by the method of averaged Talbot images.
- Authors
Doroshko, M.; Penyaz’kov, O.; Khramtsov, P.; Shikh, I.
- Abstract
The method of two-exposure Talbot photography has been adapted to analysis of the flow structure in a two-dimensional turbulent submerged jet of helium flowing out into an air space and in a gas flow behind the incident shock wave in a shock tube. Measurement of the local shift of the intensity maxima in the time-averaged Talbot image made it possible to determine, for the cases investigated, the two-dimensional array of angles of refraction of light with an error to 5%. The distribution of the averaged refractive index of the medium and the concentration of the gas over the flow field has been calculated by integration of the distributions obtained.
- Subjects
TALBOT'S law (Optics); PHOTOGRAPHIC exposure; HELIUM; GAS distribution; AERODYNAMICS
- Publication
Journal of Engineering Physics & Thermophysics, 2008, Vol 81, Issue 1, p48
- ISSN
1062-0125
- Publication type
Article
- DOI
10.1007/s10891-008-0014-7