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2013 Fiscal Year Final Research Report

Development of a new conceptual atomization simulator for liquid rocket engines

Research Project

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Project/Area Number 21246125
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Aerospace engineering
Research InstitutionNagoya Industrial Science Research Institute (2013)
Nagoya University (2009-2012)

Principal Investigator

UMEMURA Akira  公益財団法人名古屋産業科学研究所, その他部局等, 研究員 (60134152)

Co-Investigator(Kenkyū-buntansha) HIMENO Takehiro  東京大学, 大学院・工学系研究科, 准教授 (60376506)
SHINJO Junji  独立行政法人宇宙航空研究開発機構, その他部局等, 研究員 (10358476)
Co-Investigator(Renkei-kenkyūsha) HIMENO Takehiro  東京大学, 大学院・工学系研究科, 准教授 (60376506)
SHINJO Junji  独立行政法人・宇宙航空研究開発機構, その他部局等, 研究員 (10358476)
Project Period (FY) 2009-04-01 – 2014-03-31
Keywords乱流微粒化 / 噴霧燃焼 / 数値シミュレーション / サブグリッドモデル / 微小重力実験
Research Abstract

Spray combustion is an indispensable technology for aero-space engines. The numerical simulation method is now being introduced for the development of advanced engines. The current spray combustion simulators, however, cannot describe the atomization of injected liquid fuel which is the most important process determining the subsequent combustion performance. In the this study, the new atomization concept derived from microgravity experiment observations were extendedly developed to reveal the self-destabilizing mechanism of high-speed liquid jet and the underlying physics of turbulent atomization. Using the new findings, we for the first time succeeded in developing a turbulent atomization sub-grid model, which can be integrated into the current spray combustion simulators to describe the local turbulent atomization feature experienced by the injected liquid fuel.

  • Research Products

    (11 results)

All 2014 2013 2011 2010 Other

All Journal Article (9 results) Presentation (1 results) Book (1 results)

  • [Journal Article] Two-dimensional numerical investigation on the dynamics of ligament formation from vertically vibrating liquid layer2014

    • Author(s)
      Y. Li and A. Umemura
    • Journal Title

      Int. J. Multiphase Flow

      Volume: Vol. 60 Pages: 64-75

  • [Journal Article] Droplet/turbulence interaction and early flame kernel development in an autoigniting realistic dense spray2013

    • Author(s)
      J. Shinjo and A. Umemura
    • Journal Title

      Proc. Combust. Inst

      Volume: Vol. 34 Pages: 1553-1560

  • [Journal Article] Microgravity experiments on ISS in order to examine a new atomization theory discovered through normalgravity and microgravity experiments2011

    • Author(s)
      J. Osaka, S. Suzuki, Y. Suzuki and A. Umemura
    • Journal Title

      J. Physics : Conf. Series

      Volume: Vol. 327 Pages: 012042(14)

  • [Journal Article] Surface instability and primary atomization characteristics of straight liquid jet sprays2011

    • Author(s)
      J. Shinjo and A. Umemura
    • Journal Title

      Int. J. Multiphase Flow

      Volume: Vol. 37 Pages: 1294-1304

  • [Journal Article] Detailed simulation of primary atomization mechanism in Diesel jet spray (Isolated identification of liquid jet tip effects)2011

    • Author(s)
      J. Shinjo and A. Umemura
    • Journal Title

      Proc. Combust. Inst

      Volume: Vol. 33 Pages: 2089-2097

  • [Journal Article] Two-valued breakup length of a laminar water jet issuing from a finite-length nozzle under normal gravity2011

    • Author(s)
      A. Umemura, S. Kawanabe, S. Suzuki and J. Osaka
    • Journal Title

      Phys. Rev. E

      Volume: Vol. 84 Pages: 036309(21)

  • [Journal Article] Self-destabilizing mechanism of a laminar inviscid liquid jet issuing from a circular nozzle2011

    • Author(s)
      A. Umemura
    • Journal Title

      Phys. Rev. E

      Volume: Vol83 Pages: 046307(19)

  • [Journal Article] Simulation of liquid jet primary breakup : dynamics of ligament and droplet formation2010

    • Author(s)
      J. Shinjo and A. Umemura
    • Journal Title

      Int. J. Multiphase Flow

      Volume: Vol. 36 Pages: 513-532

  • [Journal Article] Self-destabilizing loop observed in a jetting-to-dripping transition

    • Author(s)
      A. Umemura and J. Osaka
    • Journal Title

      J. Fluid Mech

  • [Presentation] Toward a new paradigm of spray combustion research2013

    • Author(s)
      A. Umemura
    • Organizer
      9th Asia-Pacific Conference on Combustion
    • Year and Date
      20130000
  • [Book] Handbook of Atomization and Sprays : Theory and Appliations (Nasser Ashgriz Ed.)2011

    • Author(s)
      A. Umemura(分担執筆)
    • Total Pages
      951
    • Publisher
      Springer-Verlag

URL: 

Published: 2015-06-25  

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