Research on Spreading and Breaking Characteristics of Liquid Flow Impact Flat Disc

doi:10.12068/j.issn.1005-3026.2023.03.009

Abstract

Abstract: Because of the difficulty in determining the process parameters under a specific particle size， based on the principle of splash plate atomization， the liquid film thickness and flow velocity at the edge of the disk are used as intermediate variables， and the entire process is divided into two correlations: spreading inside the disk and breaking outside the disk. The gas-liquid two-phase flow mathematical model was established for the liquid film spreading process inside the disc， and the liquid film surface disturbance wave mathematical model was established for the liquid film breaking process outside the disc. The effects of flow velocity， flow diameter， and disc diameter on the spreading and breaking characteristics of the liquid film were studied. The results show that when the medium is Sn-58Bi， the liquid flow rate is 3m/s， the diameter of the disc is 200mm， and the liquid flow diameter is changed to 50~100mm， the diameter of the formed droplet is 7.5~10mm; when the liquid flow diameter increases or the disc diameter decreases， the droplet diameter increases; when the liquid flow velocity increases， the breaking time decreases， and the effect on the droplet diameter is small.

Key words: splash plate atomization; granulation; liquid film breakup; multiphase flow; ferroalloy

CLC Number:

TF09

LIU Zhong-yuan， YU Qing-bo， LIU Jun-xiang. Research on Spreading and Breaking Characteristics of Liquid Flow Impact Flat Disc[J]. Journal of Northeastern University(Natural Science), 2023, 44(3): 370-375.

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