Influence of jet velocity and impact pressure generated by electromagnetic actuator on dispersion behavior of the water jet in polyacrylamide gel

Name: G. Sripanagul

Organization : Ubon Ratchathani University. Faculty of Engineering

Name: A. Matthujak

Organization : Ubon Ratchathani University. Faculty of Engineering

Email : Anirut.m@ubu.ac.th

keyword: Electromagnetic Actuator

ThaSH: Polyacrylamide

ThaSH: Electromagnets

ThaSH: Fluid dynamics

Abstract: The objective of this research is to study the water jet dispersion into 20 percent Polyacrylamide gel of needle-free jet injection using electromagnetic actuator. The electromagnetic actuator was designed and manufactured based on impact driven method for jet generation. In this research, the effect of velocity and impact pressure of water jet on the dispersion behavior in Polyacrylamide gel was investigated. The evolution of the water jet in Polyacrylamide gel was observed by high-speed video camera, which there were 5 dispersion patterns: channel, hole, width, height and depth. From this study, it was found that the jet velocity and impact pressure increased when the travelling distance increased. The minimum and maximum jet velocity was 26.55 m/s at travelling distance of 0 mm and 207.54 m/s at travelling distance of 30 mm, respectively. The minimum and maximum impact pressure was 15.78 MPa at travelling distance of 0 mm and 111.26 MPa at travelling distance of 30 mm, respectively. The evolution of the water jet could be divided into two periods. There were penetration period and dispersion period. The influences of jet velocity and impact pressure affect on channel, hole and depth of dispersion whereas it did not affect to width and height. The channel, hole and depth increased when the jet velocity and impact pressure increased. The maximum depth was 28:22 mm at travelling distance of 30 mm.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2018

Modified: 2025-06-18

Issued: 2025-06-18

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BibliograpyCitation : In Thammasat University Faculty of Engineering. The 9th TSME International Conference on Mechanical Engineering 2018 (TSME-ICoME9) (pp.291-298) Pathum Thani : Thammasat University

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