The relevance of researchis conditioned by the need to involve low-grade high-ash coals in the fuel and raw materials base due to the limited reserves of high-quality fuel. For their effective and environmentally safe use, it is necessary to develop new and modernize existing boiler units with preliminary physical and numerical modeling. The aim of this work is an experimental study of the pulsation characteristics of a turbulent swirled flow in the model of a perspective combustion device using a four-vortex combustion scheme for pulverized-coal fuel. The object of the research is an isothermal laboratory model of the four-vortex furnace made of optically transparent Plexiglas for measurements within the framework of modern noncontact methods for flow diagnostics. Research methods: physical laboratory modeling of aerodynamics and transport processes in the four-vortex furnace; non-contact study of averaged and pulsation characteristics in the furnace volume at different operating parameters; study of pressure pulsations using a condenser microphone. Results. Using the method of particle image velocimetry the authors have obtained the distributions of the averaged and pulsation characteristics of the flow velocity in a number of sections of the model over a wide range of regime parameters. The authors determined the location of the areas with high values of turbulent pulsations and stagnant zones, and identified its features depending on the regimes. Information on the pressure pulsations in the localities of the model volume was obtained with the use of a condenser microphone. Analysis of spectral characteristics with applying the Fourier transform to the obtained data shown that there are no non-stationary periodic oscillations due to the vortex core precession in the studied model. The measured pressure pulsations are caused by acoustics, and velocity pulsations are random and are not associated with the dynamics of coherent structures.