Effect of Superimposed Vibrations on Droplet Oscillation Modes in Prilling Process

Processes

Ivan Kuric¹  Ján Piteľ¹  Kamil Židek¹  Vitalii Ivanov²  Ivan Pavlenko²  Oleksandr Liaposhchenko²  Maksym Skydanenko²  Vsevolod Sklabinskyi² 

[1] Faculty of Manufacturing Technologies, Technical University of Košice, 1 Bayerova St., 080 01 Prešov, Slovakia;Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2 Rymskogo-Korsakova St., 40007 Sumy, Ukraine;

关键词: prilling;    droplet deformation;    surface tension;    superimposed vibrations;   

DOI  :  10.3390/pr8050566

来源: DOAJ

【 摘 要 】

This article was aimed to solve an urgent problem of ensuring quality for prilling processes in vibrational prilling equipment. During the research, the need for the application of vibrational prilling to create a controlled impact on the process of jet decay on droplets with the proper characteristics was substantiated. Based on the experimental and theoretical studies of the process of decay of a liquid jet into drops, axisymmetric droplet oscillation modes for the different frequencies were observed. Frequency ranges of transition between modes of decay of a jet into drops were obtained. As a result, the mathematical model of the droplet deformation was refined. The experimental research data substantiated this model, and its implementation allowed determining the analytical dependencies for the components of the droplet deformation velocity. The proposed model explains the existence of different droplet oscillation modes depending on the frequency characteristics of the superimposed vibrational impact. Based on an analytical study of the droplet deformation velocity components, the limit values of the characteristics defining the transition between the different droplet oscillation modes were discovered. Analytical dependencies were also obtained to determine the diameter of the satellites and their total number.

【 授权许可】

Unknown