Electrostatic acceleration characteristics of nano/micro particulate jet in micro gap

Hidemasa Takana, Koichi Mizutani, Tsunemoto Kuriyagawa, Hideya Nishiyama

Research output: Contribution to journalArticlepeer-review

Abstract

The electrostatic acceleration characteristics of nano/micro particulate jet has been made clear by computational simulation for the advanced application of "powder jet deposition" coating process to dental treatment. In this study, the electrostatic field with space charge effect has been considered for the detail investigation of electrostatic particle acceleration characteristics in supersonic flow in a micro gap. Computational results show that uniform electrostatic field for acceleration is formed between nozzle tip and plate electrode installed in front of the substrate. Acceleration effect by electrostatic force can be obtined for any particle diameter even in the presence of unavoidable Shockwave in a micro gap. Particle velocity agrees reasonably well with PIV measurement result. The accuracy of computational model can be improved by considering the collisions between particles and the influence of particles on the fluid flow.

Original languageEnglish
Pages (from-to)972-977
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume75
Issue number753
DOIs
Publication statusPublished - 2009 May

Keywords

  • Electrostatic acceleration
  • Gas-solid two-phase
  • Micro gap
  • Micro/nano particle
  • Numerical simulation
  • Supersonic jet

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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