ISSN 2079-3537      

 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                             





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.