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

  • 제27권9호
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  • Pages.1282-1289
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  • 2003
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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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대형 와 모사를 사용한 혼합 탱크 내의 농도장과 유동장의 동시 해석

Simultaneous Analysis of Concentration and Flow Fields in A Stirred Tank Using Large Eddy Simulation

  • 윤현식 (부산대학교 첨단조선공학센터) ;
  • 전호환 (부산대학교 첨단조선공학센터) ;
  • 하만영 (부산대학교 공과대학 기계공학부)
  • 발행 : 2003.09.01
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초록

Transport of a scalar quantity, such as chemical concentration or temperature, is important in many engineering applications and environmental flows. Here we report on results obtained from the large eddy simulations of flow and concentration fields inside the tank performed using a spectral multi-domain technique. The computations were driven by specifying the impeller-induced flow at the blade tip radius (Yoon et al.). This study focused on the concentration development at different molecular diffusivities in a stirred tank operated under turbulent conditions. The main objective of the work presented here is to study the large-scale mixing structure at different molecular diffusivities in a stirred tank by using the large eddy simulation. The time sequence of concentration and flow fields shows the flow dependency of the concentration development. The presence of spatial inhomogenieties is detailed by observing the time variation oflocal concentration at different positions.

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참고문헌

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