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

  • 제40권6호
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  • Pages.365-372
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  • 2016
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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테일러 반응기 내의 입자응집과 분해에 관한 수치 연구

Numerical Study of Aggregation and Breakage of Particles in Taylor Reactor

  • 이승훈 (서울대학교 기계항공공학부) ;
  • 전동협 (동국대학교 기계부품시스템공학과)
  • Lee, Seung Hun (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Jeon, Dong Hyup (Dept. of Mechanical System Engineering, Dongguk Univ.)
  • 투고 : 2015.09.15
  • 심사 : 2016.03.08
  • 발행 : 2016.06.01
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초록

전산유체역학(CFD)을 이용하여 테일러 반응기 내 입자간 응집과 분해반응을 고려한 유동해석을 수행하였다. 입자크기분포를 파악하기 위하여 모멘트 적분법(QMOM)을 이용하여 집합체 균형방정식(Population Balance Equation)을 계산하였다. 초기 여섯 개의 모멘트를 이용하였으며, 응집커널은 Brownian kernel 과 turbulent kernel의 합을, 그리고 분해커널은 멱법칙 커널(power-law kernel)을 사용하였다. 입자의 초기 부피분율에 따른 최종 입자크기를 예측하였다. 그 결과, 초기 부피분율이 증가할수록 입자의 크기와 초기 성장속도가 증가하는 것을 확인하였다.

Using the computational fluid dynamics (CFD) technique, we simulated the fluid flow in a Taylor reactor considering the aggregation and breakage of particles. We calculated the population balance equation (PBE) to determine the particle-size distribution by implementing the quadrature method-of-moment (QMOM). It was used that six moments for an initial moments, the sum of Brownian kernel and turbulent kernel for aggregation kernel, and power-law kernel for breakage kernel. We predicted the final mean particle size when the particle had various initial volume fraction values. The result showed that the mean particle size and initial growth rate increased as the initial volume fraction of the particle increased.

키워드

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