naa a22 4500 510765610 CHVBK 20180411083155.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11630-013-0588-z doi (NATIONALLICENCE)springer-10.1007/s11630-013-0588-z Pressure wave and fluid velocity in a bend-mode inkjet nozzle with double PZT actuators [Elektronische Daten] [Sungu Kim, Jaeyong Sung, Myeong Lee] A new concept of bend-mode inkjet nozzle with double PZT (lead zirconate titanate) actuators has been designed and fabricated in the present study. Then the pressure wave and fluid velocity at the nozzle exit have been investigated. The complex pressure behavior inside the channel was solved numerically based on the narrow channel acoustic theory. The two PZTs attached to a rectangular channel were actuated sequentially by setting the waveforms of each PZT to be center-aligned with various pulse widths. As a result, the double PZT actuation is superior to the single PZT actuation in view of strong momentum force and fast dissipation of residual pressure. The maximum fluid velocity at the nozzle exit is observed when the respective pulse widths equal to their optimum pulse widths. The numerical results are supported by the experimental results with the fabricated inkjet device by measuring the speed of meniscus just out of the nozzle. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 double PZT actuators nationallicence inkjet nozzle nationallicence narrow channel theory nationallicence pressure wave nationallicence sequential actuation nationallicence Kim Sungu Graduate School, Dept. of Mechanical Engineering, SeoulTech, 139-743, Seoul, Korea aut Sung Jaeyong Dept. of Mechanical and Automotive Engineering, SeoulTech, 139-743, Seoul, Korea aut Lee Myeong Dept. of Mechanical and Automotive Engineering, SeoulTech, 139-743, Seoul, Korea aut Journal of Thermal Science SP Science Press 22/1(2013-02-01), 29-35 1003-2169 22:1<29 2013 22 11630 https://doi.org/10.1007/s11630-013-0588-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0588-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim Sungu Graduate School, Dept. of Mechanical Engineering, SeoulTech, 139-743, Seoul, Korea aut NATIONALLICENCE 700 1- Sung Jaeyong Dept. of Mechanical and Automotive Engineering, SeoulTech, 139-743, Seoul, Korea aut NATIONALLICENCE 700 1- Lee Myeong Dept. of Mechanical and Automotive Engineering, SeoulTech, 139-743, Seoul, Korea aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/1(2013-02-01), 29-35 1003-2169 22:1<29 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer