Numerical and experimental study on liquid jet atomization at near-field of coaxial type injector

Chihiro Inoue, Toshinori Watanabe, Takehiro Hiemno, Seiji Uzawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

Aiming at elucidating the flow characteristics of liquid jet at a coaxial type injector, experimental visualization and theoretical analysis as well as numerical simulation were carried out. For computing atomization phenomena, a numerical method has been developed, and it was firstly verified through quantitative comparisons with corresponding experiment of pinch off. It was confirmed that the method can compute inertia force, interfacial tension, viscous force and gravity force adequately, all of which generally affect atomization phenomena. Then, it was experimentally confirmed that fast gas flow enhanced atomization of liquid jet. Numerical analysis showed satisfactorily good agreement with corresponding experimental results. When the gaseous injection velocity became slow at constant mass flow rate, the atomization was suppressed, which was coincident with linear stability analysis of two dimensional liquid/gas parallel flow. It was clearly represented that installation of recess enhanced atomization due to straight gas flow guided by the recess. When the fast gas blew close to liquid jet, the amplitude of instability wave grew, and, additionally, impact of gas on liquid resulted in promotion of atomization.

本文言語英語
ホスト出版物のタイトル47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
出版社American Institute of Aeronautics and Astronautics Inc.
ISBN(印刷版)9781600869495
DOI
出版ステータス出版済み - 2011
外部発表はい
イベント47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011 - San Diego, CA, 米国
継続期間: 7 31 20118 3 2011

出版物シリーズ

名前47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011

その他

その他47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2011
国/地域米国
CitySan Diego, CA
Period7/31/118/3/11

All Science Journal Classification (ASJC) codes

  • エネルギー工学および電力技術
  • 航空宇宙工学
  • 制御およびシステム工学
  • 電子工学および電気工学
  • 機械工学

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