Scientific Visualization, 2018, volume 10, number 4, pages 111 - 119, DOI: 10.26583/sv.10.4.08
Digital image analysis of liquid and gas-plasma flows based on cross-correlation algorithms
Authors: I.A. Znamenskaya1, E.Yu. Koroteeva2, F.M. Glazyrin3
Lomonosov Moscow State University, Faculty of Physics, Russian Federation
1 ORCID: 0000-0001-6362-9496, znamen@phys.msu.ru
2 ORCID: 0000-0002-1705-5142
3 ORCID: 0000-0003-0208-0414
Abstract
Some application examples of
cross-correlation algorithms for the analysis of high-speed gas-plasma flows
and liquid flows are considered. The density fields of transparent media
(background oriented schlieren technique) and velocity vector fields of
gas-plasma and liquid media were investigated using both particle-based and
seedless velocimetry. It is shown that, although the physical fundamentals of
measuring the flow fields are different, the same post-processing
techniques can be applied. The problems related to the measurements of flow
parameters near shock and blast waves are discussed.
Keywords: cross-correlation algorithms, background
oriented schlieren, particle image velocimetry, thermal spots, seedless
velocimetry.
