반도체디스플레이기술학회지 (Journal of the Semiconductor & Display Technology)

한국반도체디스플레이기술학회 (The Korean Society Of Semiconductor & Display Technology)
권호 표지

원추형 유동층 연소기 내의 열전달에 미치는 복원계수의 영향에 대한 수치해석 연구

A Numerical Study on the Effect of Coefficient of Restitution to Heat Transfer in a Conical Fluidized Bed Combustor

  • 강승모 (부경대학교 소방공학과) ;
  • 박외철 (부경대학교 소방공학과) ;
  • ;
  • 고동국 (전북대학교 기계공학과) ;
  • 임익태 (전북대학교 기계설계공학부)
  • Kang, Seung Mo (Department of Fire-fighting Engineering, Pukyong Univ.) ;
  • Park, Woe-Chul (Department of Fire-fighting Engineering, Pukyong Univ.) ;
  • Abdelmotalib, Hamada (Department of Mechanical Design Eng., Chonbuk National University) ;
  • Ko, Dong Kuk (Department of Mechanical Engineering, Chonbuk National University) ;
  • Im, Ik-Tae (Department of Mechanical Design Eng., Chonbuk National University)
  • 투고 : 2015.11.16
  • 심사 : 2015.12.21
  • 발행 : 2015.12.31
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초록

In this paper, numerical simulations on conical fluidized bed combustors were carried out to estimate the effect of coefficients of restitution between particle and particle and particle to wall on hydrodynamics and heat transfer. The Eulerian-Eulerian two-fluid model was used to simulate the hydrodynamics and heat transfer in a conical fluidized bed combustor. The solid phase properties were calculated by applying the kinetic theory of granular flow. Simulations results show that increasing the restitution coefficient between the particle and particle results in increasing the bed pressure drop. On other hand, the increasing of particle to wall coefficient of restitution results in decreasing the bed pressure drop. It is found that the coefficient of restitution has little effect on heat transfer.

키워드

참고문헌

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