Continuous deposition of a liquid thread onto a moving substrate. Numerical analysis and comparison with experiment

S. Ubal, B. Xu, B. Derby, P. Grassia

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The printing of a thin line of liquid onto a moving flat solid substrate was studied numerically. For a fixed value of the Capillary number, the window of steady state deposition was explored in terms of the substrate-nozzle gap and flow rate parameter space for two nozzle configurations: a nozzle pointing vertically at the plate and a nozzle slightly tilted towards the substrate motion direction. A lower limit for the flow rate was found, below which no steady state solutions could be obtained. This minimum flow rate increases as the nozzle stand-off and the nozzle tilting do. Solutions near this lower flow rate boundary were stable under a flow rate perturbation. The process was also studied experimentally and the measurements were compared with the corresponding numerical simulations, giving a fairly good agreement, except in the advancing front deposition region.
LanguageEnglish
Article number021301
Number of pages17
JournalJournal of Fluids Engineering
Volume134
Issue number2
DOIs
Publication statusPublished - 6 Mar 2012

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Numerical analysis
Nozzles
Flow rate
Liquids
Substrates
Experiments
Printing
Computer simulation

Keywords

  • liquid thread
  • moving substrate
  • nozzle positioning

Cite this

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Continuous deposition of a liquid thread onto a moving substrate. Numerical analysis and comparison with experiment. / Ubal, S.; Xu, B.; Derby, B.; Grassia, P.

In: Journal of Fluids Engineering, Vol. 134, No. 2, 021301, 06.03.2012.

Research output: Contribution to journalArticle

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