Numerical Visualization of Fluid Flow and Filtration Efficiency in Centrifugal Oil Purifier
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다운로드
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참고문헌
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초록
The centrifugal oil purifier is used in ships for purifying the engine lubrication oil. The momentum needed for the rotation of the cylindrical chamber is obtained by jet injections. The dust particles in the oil are separated by the centrifugal forces moving to the inner wall of the rotating cylindrical chamber body. The dust particles are eliminated when the particles are adsorbed onto the surface of the inner wall of the chamber body. The flow characteristics and the physical behaviours of particles in this centrifugal oil purifier have been investigated numerically and the filtration efficiencies have been evaluated. For the calculations, a commercial code has been used and the SST k-ωturbulence model has been adopted. The MRF (Multiple Reference Frame) method has been introduced to consider the rotating effect of the flows. Under various variables, such as particle size, particle density and rotating speed, the filtration efficiencies have been evaluated. It has been verified that the filtration efficiency is increased with the increments of the particle size, the particle density and the rotating speed of the cylindrical chamber.
Abstract
The centrifugal oil purifier is used in ships for purifying the engine lubrication oil. The momentum needed for the rotation of the cylindrical chamber is obtained by jet injections. The dust particles in the oil are separated by the centrifugal forces moving to the inner wall of the rotating cylindrical chamber body. The dust particles are eliminated when the particles are adsorbed onto the surface of the inner wall of the chamber body. The flow characteristics and the physical behaviours of particles in this centrifugal oil purifier have been investigated numerically and the filtration efficiencies have been evaluated. For the calculations, a commercial code has been used and the SST k-ωturbulence model has been adopted. The MRF (Multiple Reference Frame) method has been introduced to consider the rotating effect of the flows. Under various variables, such as particle size, particle density and rotating speed, the filtration efficiencies have been evaluated. It has been verified that the filtration efficiency is increased with the increments of the particle size, the particle density and the rotating speed of the cylindrical chamber.
참고문헌 (9)
- MANN+HUMMEL GMBH, "Business Unit Industrial Filters", ~
- 정상후, "선박용 정유기 고형분 분리 성능시험 규격기준에 관한 연구", 한국마린엔지니어링학회지, 31(8), pp.1028~1034 (2007), 한국마린엔지니어링학회
- I. Y. Lee, "A basic study on the integrated lubrication system for large scale marine diesel engines", Spring Conference of the Korean Society for Power System Engineering, pp.262~266 (2003)
- Jin-Man Kim, "A study of the performance improvement of a centrifugal separator for gas-liquid two-phase flow", Proceedings of the KSME 2007 Spring Annual Meeting, pp.3352~3357 (2007)
- 방광현, "원심 오일필터 유동 해석을 통한 필터링 효율 분석", 한국마린엔지니어링학회지, 33(6), pp.867~872 (2009), 한국마린엔지니어링학회
- D. E. Smiles, "Centrifugal filtration ofparticulate systems", Chemical Engineering Science, 54, pp.215~224 (1999)
- "Ansys CFX Release 11.0 manual", ANSYS Inc, ~ (2006)
- A. Oztekin, "Pump flow solution of the navier- Stokes equations", Studies in Applied Math, 107, pp.1~41 (2001)
- A. J. Stepanoff, "Centrifugal and Axial Flow Pumps(Theory, Design and Application)" (2007), Krieger Pub Co