Study on Performance Analysis of Pump within Sump Model with AVD installation by CFD

2017

Sustainability

Abstract:A pump station is a crucial flood control facility for mitigating inundation of urban lowland areas. Securing a site to increase the capacity of a pump station or to maximize the discharge capacity of the pump sump in an urban area is difficult because of various limitations. Moreover, adding a facility to improve the pump capacity of a pump station may affect flow characteristics, e.g., unexpected increases in flow velocity and vorticity, and cause severe problems in pump station operation. To solve those problems, anti-vortex devices (AVDs) have been developed and adopted according to the appropriate design standards. The Korean design criteria for AVDs are based on experience and the standards of other countries because of the lack of adequate data on AVDs. In this study, flow in the sump was numerically simulated at various AVD heights to obtain data for improving the design and efficiency of a pump station. Consequently, the appropriate height for the AVD and changes in the flow pattern and vortex in the pump sump were determined and compared with 12 cases of inflow conditions with respect to the vertical location.

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Section: Introductionmentioning

confidence: 99%

Effective Height of a Floor Splitter Anti-Vortex Device under Varying Flow Conditions

2017

Sustainability

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“…Choi et al [13] simulated the flow homogeneity of pump stations with multiple sumps by using numerical analysis and analyzed the effects of the flow field depending on whether not an anti-vortex device (AVD) has been installed. Choi et al [14] reproduced the benchmark experiment of the TSJ by using a numerical model and analyzed the effects of an AVD on the pump efficiency by considering additional AVDs.…”

Section: Introductionmentioning

confidence: 99%

Effective Height of a Floor Splitter Anti-Vortex Device under Varying Flow Conditions

2016

Preprint

Abstract:A pump station is a very important flood control facility for mitigating inundation of urban lowland areas. It is not easy to secure a site to increase the capacity of a pump station in an urban area because of various limitations or to maximize the discharge capacity of the pump sump. Adding a facility to improve the pump capacity of a pump station may affect the flow characteristics, such as unexpected increases in the flow velocity and vorticity, and cause severe problems with operating the pump station. To solve those problems, anti-vortex devices (AVDs) have been developed and adopted for appropriate design standards. The Korean design criteria for AVDs are based on experience and foreign standards because not enough data on the AVD are available. In this study, the flow in the sump was numerically simulated at various AVD heights to collect information on improving the design and efficiency of a pump station. Consequently, an appropriate height for the AVD and changes in the flow pattern and vortex in the pump sump were determined and compared with 12 cases of inflow conditions with respect to the vertical location.

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Numerical analysis of the effects of anti-vortex device height on hydraulic performance of pump sump

2016

KSCE J Civ Eng