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Design of the Perforated Pipe in Water Treatment Process using CFD  

Cho, Young-Man (Water Quality Research of Busan Water Authority)
Yoo, Soo-Jeon (Water Quality Research of Busan Water Authority)
Roh, Jae-Soon (Water Quality Research of Busan Water Authority)
Bin, Jae-Hoon (Water Quality Research of Busan Water Authority)
Publication Information
Journal of Korean Society of Environmental Engineers / v.32, no.9, 2010 , pp. 887-893 More about this Journal
Abstract
Role of the perforated pipe is to drain the water with equal pressure and velocity through the holes of perforated pipe. The perforated pipe is being used in many processes of water treatment system, however, the design parameter of perforated pipe is not standardized in korea. In this study, we have found the design parameter of perforated pipe in the water treatment system using the Computational Fluid Dynamics (CFD). The uniformity of outflow from the perforated pipe is directly affected according to area ratio (gross area of holes/surface area of the perforated pipe). In other words, the uniformity of outflow is improved as area ratio is smaller. Also, at the same area ratio, the uniformity of outflow is improved as number of holes is increase. Specially, in case of the two holes per length of pipe diameter (2/D) shows the most uniformity of outflow and the best hydraulic with the smaller pressure drop. When the inlet velocity of pipe is about 0.06m/sec, the flux of pipe has decreased as from front to backward. When the inlet velocity is 3 m/s, the flux of pipe has increased as from front to backward.
Keywords
Perforated Pipe; Holes; Area Ratio; Computational Fluid Dynamics (CFD);
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