Vladimir N. Khmelev, Andrey V. Shalunov, Sergey A. Terentiev, Dmitry V. Genne
Relevance. Ultrasonic atomization is widely used in many areas of industry for processing liquid media and melts into particles of a given size, safe disposal of gas waste, and spray drying. The feasibility of using ultrasonic atomization is due to the possibility of obtaining fine particles of a monodisperse composition with minimal energy costs compared to other atomization methods. Since atomization is carried out by feeding a liquid medium onto a surface oscillating at an ultrasonic frequency, it is necessary to form on this surface the maximum amount of liquid placed in a layer of the optimal thickness for atomization. To ensure maximum productivity, it is not enough to feed the sprayed liquid onto the surface through one channel, and increasing its diameter does not solve the problem due to the impossibility of distributing a large amount of liquid on the surface around one feed channel with the optimal thickness. Aim is due to the need to ensure the supply of liquid onto the oscillating surface through multiple channels on this surface in order to ensure the highest possible atomization performance without increasing the size of the resulting droplets. Methods. The paper proposes a method for calculating the shape of the spray surface and the distance between the holes through which liquid is supplied to the oscillating surface to ensure a given spray performance. Results and Conclusions. The work resulted in an experimental determination of the dependence of the liquid spreading radius R0 on viscosity and surface tension. It was found that with an increase in viscosity, the liquid spreading radius decreases and an increase in the oscillation amplitude is required for spraying. With a decrease in the surface tension coefficient, the liquid spreading radius R0 increases, and the oscillation amplitude for spraying can decrease. The proposed and developed method, as well as certain numerical values of the R0 parameter, made it possible to design an ultrasonic atomizer of liquid media with the formation of sprayed droplets with an average diameter of no more than 65 μm, with a productivity of more than 15 ml / s at a total power consumption of less than 150 VA. For citation: Khmelev V.N., Shalunov A.V., Terentiev S.A., Genne D.V. Ensuring the specified productivity of liquid media ultrasonic atomization. Bulletin of the Tomsk Polytechnic University. Geo Assets Engineering, 2026, vol. 337, no. 7, pp. 16-24. https://doi.org/10.18799/24131830/2026/7/5223