Industrial Automatic Control Systems and Controllers Annotation << Back Determination of Effective Kinematic Viscosity in Vibrorheological Process Domanov V.I., Ryazapov G.M. The vibrorheological processes occurring in bulk material at different impact intensities are considered. The Lorenz model is the most suitable for analyzing these processes. Depending on the impact intensity, three modes can be distinguished: compaction, circulation, boiling. This is due to the fact that external vibrorheological impact leads to a change in the kinematic viscosity of the material. In the work, a Lorenz model adapted for research is compiled and the current value of the relative kinematic viscosity is identified. Analysis of experimental data made it possible to obtain a number of patterns in constructing boundaries between operating modes. Keywords: vibrorheological processes; bulk material; Lorenz model; kinematic viscosity; mathematical model; regime boundary; amplitude; frequency. DOI: 10.25791/asu.10.2025.1615 Pp. 13-19.