新衝突法を適用した超音速不足膨張噴流の三次元DSMC解析 : 平行噴流の相互干渉と矩形孔からの自由噴流(流体工学,流体機械)  [in Japanese] Three Dimensional Analysis of Supersonic Underexpanded Jet by the DSMC Method with a New Collision Scheme : Free Jet from a Rectangular Orifice and Plume-Plume Interaction of Parallel Jets(Fluids Engineering)  [in Japanese]

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Author(s)

    • 宇佐美 勝 USAMI Masaru
    • 名城大学理工学部機械システム工学科 Department of Mechanical Engineering, Faculty of Science and Technology, Meijo University
    • 井村 隆 IMURA Takashi
    • 名城大学理工学部機械システム工学科 Department of Mechanical Engineering, Faculty of Science and Technology, Meijo University

Abstract

A supersonic free jet through a multi-aperture circular orifice that induces plume-plume interaction or through a rectangular orifice is investigated by the DSMC method with an improved new collision scheme. When the DSMC method is applied to a continuum or a near continuum fluid, the most serious problem is that it is necessary to divide the flow-field into a network of cells the dimension of which is smaller than the local mean free path. At the meeting of the RGD23 and RGD24, Usami et al. has proposed a new intermolecular collision scheme (U-system) in which velocity components of a molecule are modified according to positions of a collision pair and it enables a large cell dimension. The collision scheme (U-system 3) proposed in the present paper conserves the total energy of each collision pair precisely during an intermolecular collision and improves the stability of the scheme.

Journal

  • TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 75(749), 1-10, 2009

    The Japan Society of Mechanical Engineers

References:  17

Codes

  • NII Article ID (NAID)
    110007044564
  • NII NACSIS-CAT ID (NCID)
    AN00187441
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    0387-5016
  • NDL Article ID
    9799071
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z16-109
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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