The development of a high-speed miniature pump with dynamic bearing

Song, Xueyi; Li, Hao Yuan; Liu, Ying; Luo, Xianwu

doi:10.1088/1742-6596/2217/1/012049

Cited by 4 publications

(5 citation statements)

References 9 publications

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“…Moreover, the phenomenon of parity alternation for the pressure fluctuation can be observed both in the volute casing and in the impeller simultaneously. For the monitoring points that share the same The pressure coefficient Cp is defined to normalize the pressure fluctuations in transient state using the Equation (7).…”

Section: Radial Forces and Pressure Pulsations In Transient Statementioning

confidence: 99%

“…Under the condition of this, the fluid structure inside the pump is far more complicated compared with the ordinary centrifugal pump. Furthermore, changing of the operating conditions as well as unsteady pressure pulsations may strongly affect the fluid force of the impeller, thus leading to the vibrations or even fatigue cracking of the pump [6][7][8]. Therefore, it is of vital importance to investigate the performance of the radial force with respect to different working conditions and the dynamic characteristics of the radial force under the design condition.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of radial force in a high-speed miniature pump

Song,

Zheng,

Luo

2024

J. Phys.: Conf. Ser.

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A high-speed miniature pump design is put forth for utilization in the aerospace sector, where the pump’s reliability holds critical importance under microgravity operational conditions. This study focuses on a dynamic bearing-equipped miniature centrifugal pump, chosen for its suitability in investigating radial forces. The prototype of the miniature pump is manufactured and tested by experiments at the rotational speed of 10,000r/min. A good agreement is observed between the numerical predictions and the experimental results. The radial force acting on different blade part has been analyzed for several flow rate conditions using the steady state CFD calculation. It has been found that the radial force exerted on the blade trailing edge exit is the main cause of the total radial force for the impeller. Moreover, using the unsteady CFD simulation, the evolution process of the radial force changing for both the direction and the magnitude with respect to the annular position due to the shaft rotation is discussed in details. The pressure pulsation is also monitored in impeller and volute casing. The results show that the amplitude of the unsteady radial force has a strong relationship with the time it takes for the blade trailing edge exit passing the volute tongue region, while the direction of the radial force hardly changes. The findings of this study contribute to facilitating the broader implementation of the high-speed miniature pump across diverse sectors of society.

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Section: Radial Forces and Pressure Pulsations In Transient Statementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of radial force in a high-speed miniature pump

Song,

Zheng,

Luo

2024

J. Phys.: Conf. Ser.

Self Cite

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“…The work of the impeller is to convert the velocity of the working fluid into pressure due to the very fast rotation [149]. Impeller application also plays an important role in many fields, for example, pumps [150], medical [151], automobile [152], and aerospace [153]. In injection moulding and other traditional impeller production techniques, raw materials such as polymeric, metal glass, stainless steel, titanium, aluminium, and nickel alloy are frequently utilized.…”

Section: Materials Extrusion Polymers In Impeller Applicationmentioning

confidence: 99%

Challenges and Opportunities in Additive Manufacturing Polymer Technology: A Review Based on Optimization Perspective

Raja

Rajan

2023

Advances in Polymer Technology

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In the emerging modern technology of additive manufacturing, the need for optimization can be found in literature in many places. Additive manufacturing (AM) is making an object layer by layer directly from digital data. Previous works of literature have classified additive manufacturing processes into seven types. However, there is a lack of comprehensive review describing the optimization challenges and opportunities in the material extrusion process (polymer technology) and also the need for FDM polymer materials application in impeller making. In this review paper, a specific optimization method called multicriteria decision-making (MCDM) from the mathematical programming technique used in additive manufacturing polymer technology (AMPT) is discussed. The other topics such as different types of optimization techniques, applications of different MCDM tools and their applications in different fields including AM, and the optimization challenges and opportunities in AMPT particularly impeller application are discussed.

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“…for its large flow discharge. In the past, the design optimization of the axial flow pump relied on engineers' expertise [5][6][7][8]. The traditional optimization procedure involves an iterative loop where geometry parameters are revised manually to achieve the desired pump performance through numerical calculations or experimental tests till meeting the requirements Fluid temperature (C) T 20…”

Section: Introductionmentioning

confidence: 99%

Impeller optimization using a machine learning-based algorithm with dynamic sampling method and flow analysis for an axial flow pump

Song,

Li,

Huang

et al. 2024

J. Phys.: Conf. Ser.

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Design optimization for widely used axial flow pumps presents a formidable challenge due to the significant impact of numerous parameters associated with impeller geometry on hydraulic performance. The expansive design space raises concerns about the cost and time implications of the optimization process. This paper introduces a machine learning-based algorithm with a dynamic sampling approach to enhance the hydraulic performance of axial flow pumps. The focus is on an axial flow pump designed for China’s South-to-North Water Diversion Project. Optimization involves selecting 15 design variables governing impeller geometry, considering meridional shape and mean blade profiles. The optimization process predicts hydraulic performance using CFD methods, with a primary objective of maximizing efficiency at the axial flow pump’s design point while maintaining pump head around the design value. The results indicate that the proposed machine learning-based algorithm exhibits commendable convergence, delivering a notable improvement in performance. For instance, the optimized axial flow pump displays 2% efficiency increase compared to the initial design. Further analysis employing concepts like entropy generation rate and boundary vorticity flux reveals that the optimized pump has more uniform flow near the pressure side of the impeller blade. Additionally, design optimization effectively suppresses flow separation at the blade trailing edge near the impeller hub. This study offers valuable insights and a practical tool for the design optimization of axial flow pumps.

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The development of a high-speed miniature pump with dynamic bearing

Cited by 4 publications

References 9 publications

Investigation of radial force in a high-speed miniature pump

Investigation of radial force in a high-speed miniature pump

Challenges and Opportunities in Additive Manufacturing Polymer Technology: A Review Based on Optimization Perspective

Impeller optimization using a machine learning-based algorithm with dynamic sampling method and flow analysis for an axial flow pump

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