Computation Fluid Dynamic Modeling of a Proposed Influent Pump Station

Wicklein, Edward; Sweeney, C.; Senon, Constantino; Hattersley, Doug; Schultz, B. H.; Naef, Randy

doi:10.2175/193864706783761356

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…Wicklein et al [12] are among those who have successfully utilized steady state RANS models to optimize the design of a wastewater treatment plant influent pump station. The original proposed pump station design was developed using extensive scale physical model test to verify hydraulic performance.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Entrained Vortices in Submersible Pump Suction Lines Using Numerical Simulations

et al. 2020

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Pump intake structure design is one area where physical models still remain as the only acceptable method that can provide reliable engineering results. Ensuring the amount of turbulence, entrained air vortices, and swirl are kept within acceptable limits requires site-specific, expensive, and time-consuming physical model studies. This study aims to investigate the viability of Computational Fluid Dynamics (CFD) as an alternative tool for pump intake design thus reducing the need for extensive physical experiments. In this study, a transient multiphase simulation of a 530 mm wide rectangular intake sump housing a 116 m3/h pump is presented. The flow conditions, vortex formation and inlet swirl are compared to an existing 1:10 reduced scaled physical model test. For the baseline test, the predicted surface and submerged vortices agreed well with those observed in the physical model. Both the physical model test and the numerical model showed that the initial geometry of the pump sump is unacceptable as per ANSI/HI 9.8 criteria. Strong type 2 to type 3 submerged vortices were observed at the floor of the pump and behind the pump. Consequently, numerical simulations of proposed sump design modification are further investigated. Two CFD models with different fillet-splitter designs are evaluated and compared based on the vortex formation and swirl. In the study, it was seen that a trident-shaped splitter design was able to prevent flow separation and vortex suppression as compared to a cross-baffle design based on ANSI/HI 9.8. CFD results for the cross-baffle design showed that backwall and floor vortices were still present and additional turbulence was observed due to the cross-flow caused by the geometry. Conversely, CFD results for the trident-shaped fillet-splitter design showed stable flow and minimized the floor and wall vortices previously observed in the first two models.

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Section: Introductionmentioning

confidence: 99%

Reduction of Entrained Vortices in Submersible Pump Suction Lines Using Numerical Simulations

et al. 2020

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CFD Modeling to Evaluate Design of an Intake of a Raw Water Pump Station at a Water Treatment Plant

Khan¹,

Islam²

2012

World Environmental and Water Resources Congress 2012

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Extent, capacity and possibilities of computational fluid dynamics as a design tool for pump intakes: a review

Zhang¹,

Yee

2018

Water Supply

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Flow near pump intakes is three-dimensional in nature, and is affected by many factors such as the geometry of the intake bay, uniformity of approach flow, critical submergence, placements and operation combinations of pumps and so on. In the last three decades, advancement of numerical techniques coupled with the increase in computational resources made it possible to conduct computational fluid dynamics (CFD) simulations on pump intakes. This article reviews different aspects involved in CFD modeling of pump station intakes, outlines the challenges faced by current CFD modelers, and provides an attempt to forecast future direction of CFD modeling of pump intakes.

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Computation Fluid Dynamic Modeling of a Proposed Influent Pump Station

Cited by 3 publications

References 10 publications

Reduction of Entrained Vortices in Submersible Pump Suction Lines Using Numerical Simulations

Reduction of Entrained Vortices in Submersible Pump Suction Lines Using Numerical Simulations

CFD Modeling to Evaluate Design of an Intake of a Raw Water Pump Station at a Water Treatment Plant

Extent, capacity and possibilities of computational fluid dynamics as a design tool for pump intakes: a review

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