Flow simulation and visualization of a microdroplet generator

Chung Chu Chen, Chen Kuei Chung, Shih Huei Chen, Tong Ming Liou

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This paper investigates droplet characteristics and refill time of the microdroplet generators with different shape of actuator and actuation amplitude. The simulation results show that a ring-type actuator provides the best performance on the droplet trajectory and ink refill time. Droplets generated by the ring-type actuator have the shortest initial pillar length and the least velocity inconsistency. Hence, the occurrence of satellite droplet is diminished. Square- and circle-type actuators have a refill time of 67 and 61 μs, respectively, up to 37% larger than the value of 49 μs of the ring-type actuator. For the ring-type actuator, the droplet size, tip velocity, and refill time are in proportion to the actuation amplitude for a given nozzle diameter.

Original languageEnglish
Pages (from-to)141-152
Number of pages12
JournalJournal of Flow Visualization and Image Processing
Issue number2
Publication statusPublished - 2004 Dec 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Computer Science Applications


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