The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
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A Study on the Flow Characteristics of Oil-Water Separator for Marine Ship CFD

CFD에 의한 선박용 유수분리기의 유동특성에 관한 연구

  • 김병준 (한국해양대학교 대학원 기계공학과) ;
  • 김성윤 (한국조선해양기자재연구원) ;
  • 노춘수 ((주)우레아텍) ;
  • 이영호 (한국해양대학교 기계공학부)
  • Received : 2015.10.15
  • Accepted : 2016.05.10
  • Published : 2016.08.01
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Abstract

The centrifugal separator which uses gravity separation method for oil-water separation, rotating at high-speed, is one of the most commonly used device for controlling the amount of the oil in waste water collected in bilge. The IMO (International Maritime Organization) has set regulations, also known as MARPOL 73/78, for the prevention of marine pollution. In addition, DET NORSKE VERITAS (DNV) has set standards regarding the assignment of Environmental Class Notation, CLEAN or CLEAN DESIGN, of ships. One of the requirements for classification is that in addition to conforming to MARPOL 73/78, more stringent measures must be taken as well. One of these measures is to limit the oil concentration in bilge water to less than 5ppm. So in this study, an Oil-Water Separator (OWS) is used together with multiple separating plates as a filtration system to be used as an oil-water separation device. The OWS operates using centrifugal separation in which the mixture is separated by centrifugal forces. The main purpose of this paper is to present the OWS separation efficiency according to the rotation speed, mass-flow rate, the angle and the number of stacked layers of the laminated plate using Computational Fluid Dynamics (CFD). Improvements to the device will be investigated from these results.

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