This paper presents numerical and theoretical studies of acoustic wave interactions in slightly compressible liquids within piezoelectrically driven inkjet print heads. The interconnected flow channels may cause jet cross-talk, resulting in poor printing quality. Thus, it should be reduced by modifying the channel structure with the acoustic wave interactions considered. Compressible gas flow driven by the sudden movement of a top wall in the channel is calculated using Flow3D and is validated with the result obtained by using the narrow gap theory. For the calculation of pressure waves in the ink flow, a limited compressibility model of the Flow3D is used. It is found that reducing the restrictor width can damp out the jet cross-talk by inhibiting the pressure wave propagation. The degree of cross-talk has been quantified using the maximum values of cross-correlations between neighboring channels and a critical channel dimension for acceptable cross-talk has been proposed. This finding is verified by drop visualization experiments using silicon-micromachined piezo inkjet print heads that are fabricated by our group.
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ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering
July 17–20, 2006
Miami, Florida, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4751-9
PROCEEDINGS PAPER
Numerical Simulation of Hydro-Acoustic Flow of Liquid in Piezo Inkjet Print Head Available to Purchase
You-Seop Lee,
You-Seop Lee
Samsung Advanced Institute of Technology, Suwon, Korea
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Jae Woo Chung
Jae Woo Chung
Samsung Advanced Institute of Technology, Suwon, Korea
Search for other works by this author on:
You-Seop Lee
Samsung Advanced Institute of Technology, Suwon, Korea
Jae Woo Chung
Samsung Advanced Institute of Technology, Suwon, Korea
Paper No:
FEDSM2006-98521, pp. 511-516; 6 pages
Published Online:
September 5, 2008
Citation
Lee, Y, & Chung, JW. "Numerical Simulation of Hydro-Acoustic Flow of Liquid in Piezo Inkjet Print Head." Proceedings of the ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. Volume 2: Fora. Miami, Florida, USA. July 17–20, 2006. pp. 511-516. ASME. https://doi.org/10.1115/FEDSM2006-98521
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