The paper is devoted to development of the optical electronic setup for carrying out measurements by multicolor particle image velocimetry. The main advantage of this method is the ability to visualize vector velocity fields in several planes simultaneously. As a result a 3D model of a setup was developed, a laboratory sample was assembled and series of testing experiments were performed. As a test object, vortex structure formed by a chemical stirrer in a cuvette with liquid has been considered. The experimental data were compared with the computer model developed in SolidWorks and FlowVision software.

The paper is concerned with a prospective method of qualitative and qualitative diagnostic technique – multi colored particle image velocimetry. The method proposed relies on illuminating of the studied flow by three laser planes with different wavelengths. The advantages of applying the technique in practice to investigate various flows have described. An efficiency verification of multi colored particle image velocimetry method to study vortex structures has been conducted. An experimental setup has assembled and an algorithm of the recorde images processing procedure has been developed. To assess the quality of MPIV measurements the experimental images have been compared with the computer model.

The work is devoted to the study of the water flow created by a pump in a cuvette by multicolor particle image velocimetry. Multicolor particle image velocimetry method is another modification of the particle image velocimetry. The main difference between this method and other modifications is that not one laser plane is used as probing radiation, but several with different wavelengths. Such modernization makes it possible to obtain velocity vector fields simultaneously in several laser planes. The paper describes an algorithm for carrying out measurements using multicolor particle image velocimetry and processing the recorded data. An experimental setup has been developed and a series of experiments has been carried out, as a result of which the structure of the flow under study has been visualized, vector velocity fields in three laser planes have been obtained.

The work aim is to investigate the influence of the parameters of the laser interference method experimental setup on the obtained images. Using computer modeling based on the diffraction theory and physical experiment, the change in the parameters of the interference pattern for different viewing angles had been shown. The results can be used to develop a single algorithm for processing images of the laser interference method.

The work is devoted to colloidal solutions diagnostics by the optical method based on elastic light scattering by particles of the dispersed phase. The scheme of the developed optical electronic complex for recording the intensity of radiation scattered by colloidal particles is presented. The experimental study results of the elastic scattering of laser radiation on spherical nanometer-sized aluminum oxide particles suspended in water are represented. A method for measuring the scattering indicatrix based on the registration of radiation scattered in various directions and subsequent computer processing has been proposed. A method for reconstructing the particle size distribution function of colloidal solution dispersed phase by comparing the measured scattering indicators and their computer models has been developed. The method has been tested, as a result of which the size distribution function of aluminum oxide nanopowder particles has been restored.