Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지

A Study on Mixing Characteristics of Ocean Outfall System with Rosette Diffuser

장미형확산관 형태의 해양방류시스템의 혼합특성 연구

  • 김영도 (인제대학교 환경공학부) ;
  • 서일원 (서울대학교 건설환경공학부) ;
  • 권석재 (국립해양조사원 해양조사연구실) ;
  • 류시완 (창원대학교 토목공학과) ;
  • 권재현 (인제대학교 환경공학부)
  • Received : 2008.04.23
  • Accepted : 2008.06.10
  • Published : 2008.06.15
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Abstract

The hybrid model can be used to predict the initial near field mixing and the far field transport of the buoyant jets, which are discharged from the submerged wastewater ocean outfall. In the near field, the jet integral model can be used for single port diffusers while the ${\sigma}$ transformed particle tracking model was used in the far field. In this study, the experimental study was performed to verify the developed hybrid model in the previous research. The developed hybrid model properly predict the surface and vertical concentration distribution of the single buoyant jets with various effluent and ambient conditions. The hybrid model can also simulate the surface concentration distribution of the rosette diffuser except for the parallel diffuser with the higher densimetric Froude number due to the assumption that dynamic effects of the effluent plumes are negligible in the far field. The application of the hybrid model to rosette diffusers can predict the concentration near the diffuser more accurately when the line-plume approximation is used.

Keywords

Acknowledgement

Supported by : 인제대학교

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