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Three-dimensional numerical simulation of air-flow in inkjet print-zones.
- Source :
-
International Journal of Heat & Fluid Flow . Feb2022, Vol. 93, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • The air-flow due to droplet entrainment in inkjet print-zones is simulated for a range of conditions. • Increasing the pen-to-paper spacing causes the vortex upstream of the print-zone to become deformed. • Adding through flow from the inlet to outlet is an effective remedy for the print defect. Air-flow oscillations in inkjet print-zones give rise to undesirable print defects due to misplacement of low Stokes number satellite droplets. The problem is studied numerically using a novel dispersed-phase continuum method, that, due to the separation of length scales, permits the force exerted by the multitude of high Stokes number main droplets to be modelled as a continuous smooth field. The oscillations seem to be linked to the deformation of the primary vortex upstream of the print-zone. It is also shown that introducing extra flow in the direction of the paper motion is an effective remedy for the oscillations. [ABSTRACT FROM AUTHOR]
- Subjects :
- *COMPUTER simulation
*COMPUTATIONAL fluid dynamics
Subjects
Details
- Language :
- English
- ISSN :
- 0142727X
- Volume :
- 93
- Database :
- Academic Search Index
- Journal :
- International Journal of Heat & Fluid Flow
- Publication Type :
- Academic Journal
- Accession number :
- 154505515
- Full Text :
- https://doi.org/10.1016/j.ijheatfluidflow.2021.108911