RT Journal Article SR Electronic A1 ĹšLEZIAK, Mariusz T1 JF Trends in education YR 2008 VO 1 IS 1 SP 594 OP 597 UL https://tvv-journal.upol.cz/en/artkey/tvv-200801-0139.php AB The results of flow visualization and digital image processing methods allowed to obtain detailed conclusions about the hydrodynamics of two-phase flow. Optical techniques of measurement, based on correlation algorithms, allow accurate determination of flow parameters. Quantitative measurements of flow and turbulence characteristics are obtained using DPIV.