Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Application of a CFD Model for the Design of a Settling Basin Inlet Structure

침전지 유입부 설계를 위한 CFD 모형의 적용

  • Received : 2005.02.14
  • Accepted : 2005.06.01
  • Published : 2005.06.15
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Abstract

We applied a commercially available computational fluid dynamics model, FLOW-3D, to design a settling basin inlet structure for the intended O sewage plant. In addition, we analyzed the extent to which the inlet sewage water was distributed as a result, firstly, of the location and width of a submerged baffle wall and, secondly, of the opening ratio of a baffle wall with opening holes. The application results show that the flow is unstable due to the generation of eddies in both sides of the submerged baffle wall when the submerged baffle wall is located close to the inlet. The eddies and subsequent instability also occur when the submerged baffle wall is located close to the baffle wall with opening holes. Moreover, the discharge that passes through the midsection of the settling basin increases as the width of the submerged baffle wall increases. At the O sewage plant, when the submerged baffle wall with a width of 2.4 m was located 2 m from the inlet structure and the opening ratio of the baffle wall was 7 percent, the most satisfactory distribution of the inlet sewage water occurred at the entrance of the settling basin.

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References

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