Mass transfer mechanisms of rotary atomization: A numerical study using the moving particle semi-implicit method

Zhongguo SUN, Xiao CHEN, Guang XI*, Ling LIU, Xi CHEN

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

16 Citations (Scopus)

Abstract

A particle-based meshless method, the moving particle semi-implicit (MPS) method, is employed in this study to simulate the process of liquid film breakup and atomization in a rotary atomizer. The computational framework incorporates a specially designed inlet flow model, a centrifugal force calculation, and a surface tension model to allow the simulation of the unsteady flow with extreme deformations. To improve efficiency, the searching algorithm of the MPS method is modified by eliminating redundant calculations. The computational framework is further utilized to systematically study the transition of the liquid from the bulk phase to a film, then to multiple belts, and finally to numerous droplets under the low pressure and flow rate conditions in the rotary atomization. Key mass transfer mechanisms underlying the atomization process are elucidated by a comprehensive analysis of the flow trajectories. The computational work is expected to improve the fundamental understanding of the rotary atomization process and facilitate future process optimization efforts. © 2016 Elsevier Ltd
Original languageEnglish
Pages (from-to)90-101
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Volume105
Early online date26 Sept 2016
DOIs
Publication statusPublished - Feb 2017
Externally publishedYes

Bibliographical note

This work is supported by the National Natural Science Foundation of China (NSFC) Project (No. 51576154) and Project (No. 52136006).

Keywords

  • Atomization
  • Computational efficiency
  • Mixture
  • Moving particle semi-implicit method
  • Rotary atomizer

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