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- W2495442203 abstract "The operating condition of a submerged propeller has a significant impact on flow field and energy consumption of the oxidation ditch. An experimentally validated numerical model, based on the computational fluid dynamics (CFD) tool, is presented to optimize the operating condition by considering two important factors: flow field and energy consumption. Performance demonstration and comparison of different operating conditions were carried out in a Carrousel oxidation ditch at the Yingtang wastewater treatment plants in Anhui Province, China. By adjusting the position and rotating speed together with the number of submerged propellers, problems of sludge deposit and the low velocity in the bend could be solved in a most cost-effective way. The simulated results were acceptable compared with the experimental data and the following results were obtained. The CFD model characterized flow pattern and energy consumption in the full-scale oxidation ditch. The predicted flow field values were within −1.28 ± 7.14% difference from the measured values. By determining three sets of propellers under the rotating speed of 6.50 rad/s with one located 5 m from the first curved wall, after numerical simulation and actual measurement, not only the least power density but also the requirement of the flow pattern could be realized." @default.
- W2495442203 created "2016-08-23" @default.
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- W2495442203 date "2016-05-31" @default.
- W2495442203 modified "2023-10-18" @default.
- W2495442203 title "Optimization design of submerged propeller in oxidation ditch by computational fluid dynamics and comparison with experiments" @default.
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- W2495442203 doi "https://doi.org/10.2166/wst.2016.184" @default.
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