An experimental setup to study the dynamics of droplet jetting from a commercially available print-head is described. A MicroFab print-head with an 80 μm diameter transparent nozzle was set to print droplets at a speed of 5 m/s at a frequency of 7 kHz. A Particle Image Velocimetry (PIV) scheme consisting of an optical microscope coupled to an ultra-high speed camera is utilized to capture the motion of particles suspended in a model transparent ink. This experimental arrangement images the flow at the centre of a glass cylindrical nozzle and above the fluid meniscus at a speed of half a million frames per second. Velocity fields are obtained from an approximately 200 μm thickness layer of fluid at the inside of the nozzle. Experimental results are compared with Lagrangian finite-element numerical simulations under identical fluid and jetting conditions with good agreement. The advantages, challenges and current limitations of this approach are discussed.
%0 Conference Paper
%1 CastrejonPita2011UltraHigh
%A Castrejón-Pita, José R.
%A Hoath, Stephen D.
%A Castrejón-Pita, Alfonso A.
%A Morrison, Neil F.
%A Hsiao, Wen-Kai
%A Hutchings, Ian M.
%B 2011 International Conference on Digital Printing Technologies
%D 2011
%I Society for Imaging Science and Technology
%K 76m10-finite-element-methods-in-fluid-mechanics flow-visualization ink-jet
%P 93--96
%T Ultra-High Speed Particle Image Velocimetry on Drop-on-Demand Jetting
%U http://www.ingentaconnect.com/content/ist/nipdf/2011/00002011/00000001/art00024
%X An experimental setup to study the dynamics of droplet jetting from a commercially available print-head is described. A MicroFab print-head with an 80 μm diameter transparent nozzle was set to print droplets at a speed of 5 m/s at a frequency of 7 kHz. A Particle Image Velocimetry (PIV) scheme consisting of an optical microscope coupled to an ultra-high speed camera is utilized to capture the motion of particles suspended in a model transparent ink. This experimental arrangement images the flow at the centre of a glass cylindrical nozzle and above the fluid meniscus at a speed of half a million frames per second. Velocity fields are obtained from an approximately 200 μm thickness layer of fluid at the inside of the nozzle. Experimental results are compared with Lagrangian finite-element numerical simulations under identical fluid and jetting conditions with good agreement. The advantages, challenges and current limitations of this approach are discussed.
@inproceedings{CastrejonPita2011UltraHigh,
abstract = {{An experimental setup to study the dynamics of droplet jetting from a commercially available print-head is described. A MicroFab print-head with an 80 μm diameter transparent nozzle was set to print droplets at a speed of 5 m/s at a frequency of 7 kHz. A Particle Image Velocimetry (PIV) scheme consisting of an optical microscope coupled to an ultra-high speed camera is utilized to capture the motion of particles suspended in a model transparent ink. This experimental arrangement images the flow at the centre of a glass cylindrical nozzle and above the fluid meniscus at a speed of half a million frames per second. Velocity fields are obtained from an approximately 200 μm thickness layer of fluid at the inside of the nozzle. Experimental results are compared with Lagrangian finite-element numerical simulations under identical fluid and jetting conditions with good agreement. The advantages, challenges and current limitations of this approach are discussed.}},
added-at = {2019-03-01T00:11:50.000+0100},
author = {Castrej\'{o}n-Pita, Jos\'{e} R. and Hoath, Stephen D. and Castrej\'{o}n-Pita, Alfonso A. and Morrison, Neil F. and Hsiao, Wen-Kai and Hutchings, Ian M.},
biburl = {https://www.bibsonomy.org/bibtex/2f01a305ec789182ab9f563297de55e73/gdmcbain},
booktitle = {2011 International Conference on Digital Printing Technologies},
citeulike-article-id = {14616000},
citeulike-attachment-1 = {castrejon-pita_11_ultra-high.pdf; /pdf/user/gdmcbain/article/14616000/1140890/castrejon-pita_11_ultra-high.pdf; 34daae15d5d5916f9077ebd1a83cd4ab3a51eff7},
citeulike-linkout-0 = {http://www.ingentaconnect.com/content/ist/nipdf/2011/00002011/00000001/art00024},
file = {castrejon-pita_11_ultra-high.pdf},
interhash = {6db644ebc3ae45154aed7440def58aa8},
intrahash = {f01a305ec789182ab9f563297de55e73},
issn = {2169-4451},
keywords = {76m10-finite-element-methods-in-fluid-mechanics flow-visualization ink-jet},
pages = {93--96},
posted-at = {2018-07-19 02:57:47},
priority = {5},
publisher = {Society for Imaging Science and Technology},
series = {NIP \& Digital Fabrication Conference},
timestamp = {2019-03-01T00:11:50.000+0100},
title = {{Ultra-High Speed Particle Image Velocimetry on Drop-on-Demand Jetting}},
url = {http://www.ingentaconnect.com/content/ist/nipdf/2011/00002011/00000001/art00024},
year = 2011
}