Numerical study on the effects of non-dimensional parameters on drop-on-demand droplet formation dynamics and printability range in the up-scaled model
The droplet formation dynamics from a drop-on-demand printhead is numerically investigated with regard to the printability range. The numerical simulation is carried out using a volume-of-fluid model, and the qualitative effects of non-dimensional parameters on the droplet formation dynamics are eva...
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Veröffentlicht in: | Physics of fluids (1994) 2012-08, Vol.24 (8) |
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creator | KIM, Eunjeong BAEK, Jehyun |
description | The droplet formation dynamics from a drop-on-demand printhead is numerically investigated with regard to the printability range. The numerical simulation is carried out using a volume-of-fluid model, and the qualitative effects of non-dimensional parameters on the droplet formation dynamics are evaluated. To determine the printability range, within which the droplet is ejected in a stable manner without satellite droplets, extensive numerical simulations are carried out by varying the viscosity and surface tension. Generally, the printability range is determined by a Z number, which is the inverse of the Ohnesorge number (Oh). However, it is found that the Z number alone is insufficient for describing the droplet formation dynamics. Other important non-dimensional parameters such as the Reynolds number (Re), Weber number (We), and capillary number (Ca) should also be taken into consideration. For studying the printability, the droplet formation dynamics are divided into five different regimes, and a regime map based on the Z, We, and Ca is proposed. |
doi_str_mv | 10.1063/1.4742913 |
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The numerical simulation is carried out using a volume-of-fluid model, and the qualitative effects of non-dimensional parameters on the droplet formation dynamics are evaluated. To determine the printability range, within which the droplet is ejected in a stable manner without satellite droplets, extensive numerical simulations are carried out by varying the viscosity and surface tension. Generally, the printability range is determined by a Z number, which is the inverse of the Ohnesorge number (Oh). However, it is found that the Z number alone is insufficient for describing the droplet formation dynamics. Other important non-dimensional parameters such as the Reynolds number (Re), Weber number (We), and capillary number (Ca) should also be taken into consideration. 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The numerical simulation is carried out using a volume-of-fluid model, and the qualitative effects of non-dimensional parameters on the droplet formation dynamics are evaluated. To determine the printability range, within which the droplet is ejected in a stable manner without satellite droplets, extensive numerical simulations are carried out by varying the viscosity and surface tension. Generally, the printability range is determined by a Z number, which is the inverse of the Ohnesorge number (Oh). However, it is found that the Z number alone is insufficient for describing the droplet formation dynamics. Other important non-dimensional parameters such as the Reynolds number (Re), Weber number (We), and capillary number (Ca) should also be taken into consideration. For studying the printability, the droplet formation dynamics are divided into five different regimes, and a regime map based on the Z, We, and Ca is proposed.</description><subject>Applied sciences</subject><subject>Computational fluid dynamics</subject><subject>Computer simulation</subject><subject>Droplets</subject><subject>Dynamic tests</subject><subject>Dynamics</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Fluid flow</subject><subject>Hardware</subject><subject>Input-output equipment</subject><subject>Inverse</subject><subject>Mathematical models</subject><issn>1070-6631</issn><issn>1089-7666</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqNkb1u3DAMx40iBXq5ZugbaAmQDE4l0SfZY3FI0gCHdmlmQ5aoVoEluZI83JPkdWvnDp0zkQR_5J8fVfWF0TtGBXxld41seMfgQ7VhtO1qKYS4WH1JayGAfaouc36hlELHxaZ6_TF7TE6rkeQymyOJgZQ_SNBa1CWTaEmIoTbOY8guhoWbVFIeC6a8wibFqV4J9CqYt3DEQmxMXhW3AsegvNOZrOkpuVDU4EZXjiSp8BuJOwnOU52XKdAQHw2On6uPVo0Zr852Wz0_3P_af68PPx-f9t8OtW64KPVA7cDBgJXYGT00wDjftRSNNoY1rTbWStvu9A6EVh0FY1pmOQxMCkAYJGyrm1PfKcW_M-bSe5c1jqMKGOfcMykp7GjXvgMFDpw1QNmC3p5QnWLOCW2_LO5VOvaM9uufetaf_7Sw1-e2aj2AXa6iXf5fwMUiL4WEf5gDlL4</recordid><startdate>20120801</startdate><enddate>20120801</enddate><creator>KIM, Eunjeong</creator><creator>BAEK, Jehyun</creator><general>American Institute of Physics</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20120801</creationdate><title>Numerical study on the effects of non-dimensional parameters on drop-on-demand droplet formation dynamics and printability range in the up-scaled model</title><author>KIM, Eunjeong ; BAEK, Jehyun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c426t-b0fb23d3f7e9dcb43122580edcdd148cdff7f85c536ca903dd81f23b1763e3b73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Applied sciences</topic><topic>Computational fluid dynamics</topic><topic>Computer simulation</topic><topic>Droplets</topic><topic>Dynamic tests</topic><topic>Dynamics</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Fluid flow</topic><topic>Hardware</topic><topic>Input-output equipment</topic><topic>Inverse</topic><topic>Mathematical models</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>KIM, Eunjeong</creatorcontrib><creatorcontrib>BAEK, Jehyun</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics of fluids (1994)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>KIM, Eunjeong</au><au>BAEK, Jehyun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Numerical study on the effects of non-dimensional parameters on drop-on-demand droplet formation dynamics and printability range in the up-scaled model</atitle><jtitle>Physics of fluids (1994)</jtitle><date>2012-08-01</date><risdate>2012</risdate><volume>24</volume><issue>8</issue><issn>1070-6631</issn><eissn>1089-7666</eissn><coden>PHFLE6</coden><abstract>The droplet formation dynamics from a drop-on-demand printhead is numerically investigated with regard to the printability range. The numerical simulation is carried out using a volume-of-fluid model, and the qualitative effects of non-dimensional parameters on the droplet formation dynamics are evaluated. To determine the printability range, within which the droplet is ejected in a stable manner without satellite droplets, extensive numerical simulations are carried out by varying the viscosity and surface tension. Generally, the printability range is determined by a Z number, which is the inverse of the Ohnesorge number (Oh). However, it is found that the Z number alone is insufficient for describing the droplet formation dynamics. Other important non-dimensional parameters such as the Reynolds number (Re), Weber number (We), and capillary number (Ca) should also be taken into consideration. For studying the printability, the droplet formation dynamics are divided into five different regimes, and a regime map based on the Z, We, and Ca is proposed.</abstract><cop>Melville, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4742913</doi><oa>free_for_read</oa></addata></record> |
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source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
subjects | Applied sciences Computational fluid dynamics Computer simulation Droplets Dynamic tests Dynamics Electronics Exact sciences and technology Fluid flow Hardware Input-output equipment Inverse Mathematical models |
title | Numerical study on the effects of non-dimensional parameters on drop-on-demand droplet formation dynamics and printability range in the up-scaled model |
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