Optimization of a Single-Channel Pump Impeller for Wastewater Treatment

Kim, Joon‐Hyung; Cho, Bo-Min; Kim, Youn-Sung; Choi, Young-Seok; Kim, Kwang‐Yong; Kim, Jin‐Hyuk; Cho, Yong

doi:10.5293/ijfms.2016.9.4.370

Cited by 21 publications

(16 citation statements)

References 22 publications

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“…In a previous study, the accuracy of the numerical analysis was evaluated by validating the results of the steady flow analysis [20]. The single-channel pump model used in this validation for both the impeller and the volute was designed using the Stepanoff theory.…”

Section: Resultsmentioning

confidence: 99%

“…The rotating impeller and the volute domains were each constructed using approximately 1,300,000 and 1,200,000 grid points. Therefore, the total optimum grid system selected using the grid independency test has approximately 2,500,000 grid points, as previously reported [20].…”

Section: Single-channel Pump Modelmentioning

confidence: 96%

“…The single-channel pump impeller for wastewater treatment used in this work was initially designed according to the Stepanoff theory from a previous study [20], as shown in Fig. 1.…”

Section: Single-channel Pump Modelmentioning

confidence: 99%

See 2 more Smart Citations

Multi-objective Optimization Based on Unsteady Analysis Considering the Efficiency and Radial Force of a Single-Channel Pump for Wastewater Treatment

Kim¹,

Cho²,

Choi³

et al. 2016

JMEA

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A multidisciplinary optimization was conducted to simultaneously improve the efficiency and reduce the radial force of a single-channel pump for wastewater treatment. A hybrid multi-objective evolutionary algorithm was coupled with a surrogate model to optimize the geometry of the single-channel pump volute. Steady and unsteady Reynolds-averaged Navier-Stokes equations with a shear stress transport turbulence model were discretized using finite volume approximations and were then solved on tetrahedral grids to analyze the flow in the single-channel pump. The three objective functions represented the total efficiency, the sweep area of the radial force during one revolution, and the distance of the mass center of sweep area from the origin while the two design variables were related to the cross-sectional area of the internal flow of the volute. Latin hypercube sampling was employed to generate twelve design points within the design space, and response surface approximation models were constructed as surrogate models for the objectives based on the values of the objective function at the given design points. A fast non-dominated sorting genetic algorithm for local search was coupled with the surrogate models to determine the global Pareto-optimal solutions. The trade-off between the objectives was determined and was described in terms of the Pareto-optimal solutions. The results of the multi-objective optimization showed that the optimum design simultaneously improved the efficiency and reduced the radial force relative to those of the reference design.

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Section: Resultsmentioning

confidence: 99%

Section: Single-channel Pump Modelmentioning

confidence: 96%

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Multi-objective Optimization Based on Unsteady Analysis Considering the Efficiency and Radial Force of a Single-Channel Pump for Wastewater Treatment

Kim¹,

Cho²,

Choi³

et al. 2016

JMEA

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show abstract

“…Figures 2 and 3 show the distribution of internal flows in the cross-sectional area of the impeller and volute generated from the Stepanoff theory. In the authors' previous work, for example, the reference volume flow rate and total head at the design point were 1.42 m 3 /min and 10 m, respectively, with a rotational speed of 1760 rpm [11].…”

Section: Basic Design Approach Of Single-channel Pumpmentioning

confidence: 98%

State-of-the-Art Design Technique of a Single-Channel Pump for Wastewater Treatment

Kim¹,

Choi²

2018

Wastewater and Water Quality

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A single-channel pump, which is commonly used for wastewater treatment, with a singlechannel impeller can effectively prevent performance reduction or damage caused by foreign substances. However, the design methods for this special type of pump are different and more difficult to realize than those for general pumps. In this chapter, a state-of-the-art design technique for a single-channel pump is introduced for realizing high efficiency and low-fluid-induced vibration. In other words, advanced multidisciplinary design optimization techniques combined with unsteady flow analysis are introduced and discussed in detail to simultaneously improve hydraulic efficiency and reduce flow-induced vibration, considering the impeller-volute interaction of a single-channel pump.

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“…Consequently, this model was used for subsequent simulations. The use of k- SST model gives reasonably accurate results for CFD analysis of fluid machinery [14][15][16][17][18]. An intercooler exits between the first and the second stage.…”

mentioning

confidence: 99%

Feasibility Analysis of Existing Compressor Design for Different Refrigerants

Sonawat

Choi

Lee

et al. 2017

IJFMS

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The destruction of ozone layer due to the use of refrigerants is a matter of concern in the present world. This has been addressed through various platforms and several guidelines have been framed for their usage to prevent its further degradation. Since the existing chlorofluorocarbon (CFC) and hydrofluorocarbon (HCFC) refrigerants are at the verge of phasing out because of their higher environmental impacts, this has raised various questions about the systems which employ these refrigerants. One such question is: Will the existing systems work efficiently when the existing refrigerant is replaced by a viable environment friendly substitute? The present work makes an effort to answer this question.

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Optimization of a Single-Channel Pump Impeller for Wastewater Treatment

Cited by 21 publications

References 22 publications

Multi-objective Optimization Based on Unsteady Analysis Considering the Efficiency and Radial Force of a Single-Channel Pump for Wastewater Treatment

Multi-objective Optimization Based on Unsteady Analysis Considering the Efficiency and Radial Force of a Single-Channel Pump for Wastewater Treatment

State-of-the-Art Design Technique of a Single-Channel Pump for Wastewater Treatment

Feasibility Analysis of Existing Compressor Design for Different Refrigerants

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