NUMERICAL INVESTIGATION OF INLET BAFFLE FEATURES EFFECTS ON THE HYDRAULIC PERFORMANCE OF PRIMARY SETTLING TANKS

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TAMAYOL A.; FIROUZABADI B.

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Journal: MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING) Year:2008 | Volume:23 | Issue:41-42 Page(s): 109-114

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Title

NUMERICAL INVESTIGATION OF INLET BAFFLE FEATURES EFFECTS ON THE HYDRAULIC PERFORMANCE OF PRIMARY SETTLING TANKS

Author(s)

TAMAYOL A. | FIROUZABADI B. | Issue Writer Certificate

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Abstract

Circulation is created in some parts of the settling tanks. It can increase the mixing level, decrease the effective settling and create short circuiting from inlet to outlet. All the above-mentioned phenomena act in such a way to decrease the tank's hydraulic efficiency, which quantitatively shows how flow within the tank is uniform and calm. So, the main objective of the tank design process is to avoid forming a circulation zone, which is known as the dead zone. Prediction of the flow field and size of the recirculation zone is the first step in the design of settling tanks. In this paper, while the FTC (Flow through Curve) was introduced, by using the RNG k - e turbulence model, the effects of inlet position on the hydraulic performance of primary settling tanks were investigated. The baffle presence effect was also studied. Results show that the RNG k - e turbulence model can predict the curvature of streamlines correctly. It is also shown that the inlet baffle is not useful for the present case-study and reduces its performance.

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APA: Copy

TAMAYOL, A., & FIROUZABADI, B.. (2008). NUMERICAL INVESTIGATION OF INLET BAFFLE FEATURES EFFECTS ON THE HYDRAULIC PERFORMANCE OF PRIMARY SETTLING TANKS. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), 23(41-42), 109-114. SID. https://sid.ir/paper/128286/en

Vancouver: Copy

TAMAYOL A., FIROUZABADI B.. NUMERICAL INVESTIGATION OF INLET BAFFLE FEATURES EFFECTS ON THE HYDRAULIC PERFORMANCE OF PRIMARY SETTLING TANKS. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING)[Internet]. 2008;23(41-42):109-114. Available from: https://sid.ir/paper/128286/en

IEEE: Copy

A. TAMAYOL, and B. FIROUZABADI, “NUMERICAL INVESTIGATION OF INLET BAFFLE FEATURES EFFECTS ON THE HYDRAULIC PERFORMANCE OF PRIMARY SETTLING TANKS,” MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), vol. 23, no. 41-42, pp. 109–114, 2008, [Online]. Available: https://sid.ir/paper/128286/en

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