Multi-condition optimization and experimental verification of impeller for a marine centrifugal pump

Wang, Kai; Luo, Guangzhao; Yu, Li; Xia, Ruichao; Liu, Houlin

doi:10.1016/j.ijnaoe.2019.07.002

Cited by 16 publications

(9 citation statements)

References 12 publications

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“…The optimized design was selected based on orthogonal analysis. Wang et al [8] optimized a low specific speed pump to maximize efficiency and reduce vibration. A design matrix of 15 samples for 5 parameters was built.…”

Section: Accepted Manuscript N O T C O P Y E D I T E Dmentioning

confidence: 99%

Multi-Objective Optimization of a High Specific Speed Centrifugal Volute Pump Using 3D Inverse Design Coupled With CFD Simulations

Zhang

Davila²,

Zangeneh

2019

Volume 3B: Fluid Applications and Systems

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This paper presents three different multi-objective optimization strategies for a high specific speed centrifugal volute pump design. The objectives of the optimization consist of maximizing the efficiency and minimizing the cavitation while maintaining the Euler head. The first two optimization strategies use a 3D inverse design method to parametrize the blade geometry. Both meridional shape and 3D blade geometry is changed during the optimization. In the first approach Design of Experiment method is used and the efficiency computed from CFD computations, while cavitation is evaluated by using minimum pressure on blade surface predicted by 3D inverse design method. The design matrix is then used to create a surrogate model where optimization is run to find the best tradeoff between cavitation and efficiency. This optimized geometry is manufactured and tested and is found to be 3.9% more efficient than the baseline with little cavitation at high flow. In the second approach the 3D inverse design method output is used to compute the efficiency and cavitation parameters and this leads to considerable reduction to the computational time. The resulting optimized geometry is found to be similar to the more computationally expensive solution based on 3D CFD results. In order to compare the inverse design based optimization to the conventional optimization an equivalent optimization is carried out by parametrizing the blade angle and meridional shape. Two different approaches are used for conventional optimization one in which the blade angle at TE is not constrained and one in which blade angles are constrained. In both cases larger variation in head is obtained when compared with the inverse design approach. This makes it impossible to create an accurate surrogate model. Furthermore, the efficiency levels in the conventional optimization is generally lower than the inverse design based optimization.

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Section: Accepted Manuscript N O T C O P Y E D I T E Dmentioning

confidence: 99%

Multi-Objective Optimization of a High Specific Speed Centrifugal Volute Pump Using 3D Inverse Design Coupled With CFD Simulations

Zhang

Davila²,

Zangeneh

2019

Volume 3B: Fluid Applications and Systems

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“…3-5 1 Many interesting studies have been conducted to investigate and optimize the performance of standard centrifugal pumps. [6][7][8][9] Wang et al 10 numerically optimized the impeller based on the Latin Hypercube method and found that the efficiency of the optimized pump is improved, and the vibration intensity is attenuated. Zhang et al 11 investigated the effects of modifying the blade pressure side (EPS profile) on unsteady pressure pulsations and flow structures in a low specific speed centrifugal pump using experimental and numerical methods and found that the newly introduced EPS profile helps to reduce pressure pulsations and improves the uniformity of the flow field in the blade trailing edge region.…”

Section: Introductionmentioning

confidence: 99%

Optimization and CFD performance analysis of an automotive coolant pump

Liu

Jiang

Yong

et al. 2022

Advances in Mechanical Engineering

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The blade outlet angle, wrap angle, and number of blades of the impeller are optimized to increase the pumping efficiency of the automotive coolant pump while keeping the size constant. Three new variants were designed and the optimal one was selected for the comparison with the original scheme. The experiment was conducted to test the hydraulic performance of the optimized impeller. The results show that the energy characteristics of the optimized impeller are in reasonable agreement with the experimental data. The energy characteristics and internal flow details of original scheme and optimized scheme are analyzed and compared. It was found that increasing the wrap angle while decreasing blade outlet angle appropriately can improve the flow conditions and the pressure distribution in the impeller and the volute, especially at low flow rates. At the designed flow rate, increasing the wrap angle while decreasing the number of blades and blade outlet angle can significantly increase the efficiency of the pump. And the maximum efficiency of the optimized impeller is 4.8% higher than the efficiency of the original impeller. The results of the study can guide designers in optimizing an automotive centrifugal coolant pump and reduce energy consumption of the automotive cooling system.

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“…had emulated the inner flow field of the centrifugal pump by CFD and optimized the flow field characteristics by controlling the impellers cutting process for reducing noise and isolating vibration. Wang et al [ 11 ]. had analyzed the centrifugal pump with five different geometrical parameters for improving performance of marine centrifugal pump.…”

Section: Introductionmentioning

confidence: 99%

Hydraulic performance prediction and optimization of an engine cooling water pump using computational fluid dynamic analysis

2021

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In current research, the hydraulic performance prediction and optimization of an engine cooling water pump was conducted by computational fluid dynamic (CFD) analysis. Through CFD simulation, the pump head, shaft power and efficiency for the original pump at volume flow rate 25 L/min and impeller rotating speed 4231 r/min were 3.87 m, 66.7 W and 23.09% respectively. For improving hydraulic performance, an optimization study was carried out. After optimization, four potential optimized designs were put forward. The efficiency of the optimized design No.1 for engine cooling water pump was nearly 6% higher than that of the original pump model; and the head of the optimized design No.2 for engine cooling water pump was 9% higher than that of the original pump model. Under the condition of maintaining the pump head and considering comprehensive improvement effect, the optimized design No.3 was considered as the best design and selected as the test case for validating the optimum design. The hydraulic performance predictions for this optimum engine cooling water pump agreed well with experimental data at design condition with relative discrepancies of 2.9% and 5.5% for the pump head and pump efficiency, respectively. It proved that performance prediction calculation model and the automatic optimization model were effective. This research work can provide theoretical basis for the design, development and optimization of engine cooling water pump.

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Multi-condition optimization and experimental verification of impeller for a marine centrifugal pump

Cited by 16 publications

References 12 publications

Multi-Objective Optimization of a High Specific Speed Centrifugal Volute Pump Using 3D Inverse Design Coupled With CFD Simulations

Multi-Objective Optimization of a High Specific Speed Centrifugal Volute Pump Using 3D Inverse Design Coupled With CFD Simulations

Optimization and CFD performance analysis of an automotive coolant pump

Hydraulic performance prediction and optimization of an engine cooling water pump using computational fluid dynamic analysis

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