대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제25권12호
  • /
  • Pages.1802-1812
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  • 2001
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  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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고체 입자가 부상된 충돌제트에서의 입자 거동에 관한 수치해석적 연구

Numerical Study on the Particle Movement of a Particle-Laden Impinging Jet

  • 이재범 (중앙대학교 대학원 기계공학부 석사후과정) ;
  • 서영섭 (중앙대학교 대학원 기계공학부 석사후과정) ;
  • 이정희 (서울대학교 기계항공공학부 박사후과정) ;
  • 최영기
  • 발행 : 2001.12.01
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초록

The purpose of this study is to analyze numerically the movement of particles included in turbulent fluid flow characteristics of metallic surfaces. To describe fluid flew, the incompressible Navier-Stokes equation discretized by the finite volume method were solved on the non-orthogonal coordinates with non-staggered variable arrangement, and the k-$\xi$ turbulence model was adapted. After fluid flow was calculated, particle movement was predicted from the Lagrangian approaches. Non-essential complexities were avoided by assuming that the particles had spherical shapes and the Stoke's drag formula only consisted of external farces acting upon them. In order to validate the numerical calculations, the results were compared with the experimental data reported in literature and agreed well with them. The drag force coefficient equation showed better agreement with the experimental data in the prediction of particle movement than the correction factor equation. Impact velocity and impact angle increased as inlet turbulence intensity decreased, relative jet height was lower. or the Reynolds number was larger.

키워드

참고문헌

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