Design of a Mini Double-Discharge Centrifugal Pump under Multiphase Flow
                        by CFD and Experimental Verification

Parlak, Zekeriya; Kemerli, Muaz; Engin, Tahsin; Koç, Y.

doi:10.29252/jafm.11.05.29004

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Han et al (2017) researched the asymmetric pressure distributions and pressure fluctuations in pump by experiment. Parlak et al (2018) numerical and experimental investigated the performance of a mini double discharged pump, and again proved the accurately of the CFD approach for miniature pump.…”

Section: Introductionmentioning

confidence: 78%

Study of Flow Instability in a Miniature Centrifugal Pump Based on Energy Gradient Method

Chen

Dou

et al. 2019

JAFM

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Flow instability in a miniature centrifugal pump is numerically simulated with the RANS equations and the SST k-ω turbulence model. The energy gradient method is adopted to analyze the flow instability at design load and two off-design loads, and the results are compared with those analyzed by Q-criterion. The regions with large magnitude of energy gradient function (K) indicate pronounced turbulent intensity and poor flow stability. Internal flow stability is investigated in details for both the near blade surfaces region and the impeller passages.To study the mechanism of energy gradient method, internal flow parameters such as the velocity and total pressure, the transverse gradient of total mechanical energy and the work done by shear stresses are investigated respectively. The results show that the energy dissipation reaches its maximum around the leading edge of suction surface. The value of the energy gradient function K presents a different magnitude for the near blade surfaces region and the impeller passages, and the K in the impeller passage is much larger. Regions with maximum of the work done by shear stresses are concentrated on the suction surface, regions with large transverse gradient of total mechanical energy is concentrated on the hub surfaces or shroud surfaces. It is further found that the K can reflect the influence of the outer boundaries of vortex on the flow near blade surface.

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Section: Introductionmentioning

confidence: 78%

Study of Flow Instability in a Miniature Centrifugal Pump Based on Energy Gradient Method

Chen

Dou

et al. 2019

JAFM

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“…The rational utilization and conversion of energy is the focus of energy engineering [5][6][7][8], including the world's mainstream pumps, gear pumps, Roots pumps, centrifugal pumps, blade pumps, etc. The working principle of most of these pumps is to change the fluid volume to achieve fluid pressure [9]. Existing pumps, nevertheless, also have numerous problems and shortcomings that affect the pump's applicability.…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump

Zhang

Yang

et al. 2022

Machines

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Against the backdrop of the rapid burgeoning of international energy engineering, the efficient utilization of energy is a paramount factor. The key idea in this paper is to propose an elliptical rotor scraper pump (ERSP) in order to address the imperfections and defects of traditional volume pumps, such as their labyrinthine design, low volume utilization efficiency and undesirable sealing performance. The ERSP can dramatically achieve the aims of ameliorating pump structure and improving energy efficiency. One of the Roots pump's rotors or the vane pump's shifting blade is replaced by a swing scraper in the ERSP. It is worth noting that a small swing range is a high-priority feature of the scraper; the scraper not only serves the purpose of dividing the pump cavity and self-sealing the unit but also reduces the noise level when working. A vital function of ERSP is the efficient conversion of mechanical energy into fluid pressure energy by changing the volume. Simultaneously, based on theoretical analysis, the mathematical model of the ERSP is established, and its kinematic characteristics are investigated, using ADAMS to verify the kinematic rationality of the ERSP. Ultimately, the research group manufactured a prototype of the pump, based on the previous simulation results and calculations, and experiments verified the feasibility of the pump. The design and research of the ERSP have essential reference significance for the development of fluid energy machinery technology.

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Study on the internal flow evolution mechanism and pressure pulsation characteristics of the transient process of variable speed regulation of centrifugal pump

Li,

Dong,

Zhou

et al. 2024

J. Phys.: Conf. Ser.

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In view of the fact that it is not possible to quantitatively analyze any change in the internal flow characteristics of traditional centrifugal pumps during variable speed regulation, numerical computational fluid dynamics (CFD) simulations were carried out in this study to obtain the optimal adjustment range of variable speed regulation. A single-stage IS80-65-160 centrifugal pump is modeled in 3D using Pro/E and ICEM software, followed by CFD simulations. Results are compared with experimental data, showing good agreement. Variable speed adjustments ranging from 0.5-1.0 times the original values are applied to observe changes in internal flow characteristics, such as velocity and turbulent kinetic energy. Pressure and velocity variations in different parts of the pump are studied under varied working conditions. Pressure pulsation frequency domain characteristics are measured at monitoring points in the volute. Findings indicate that as flow rate decreases due to variable speed regulation, velocity decreases linearly, while turbulent kinetic energy decreases quadratically in a uniform distribution. Pressure fluctuations within the volute remain within 0.01 Cp range, but at the tongue, fluctuations can reach up to 0.6 Cp, suggesting an optimal adjustment range within 30% of the rated value.

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Design of a Mini Double-Discharge Centrifugal Pump under Multiphase Flow by CFD and Experimental Verification

Cited by 3 publications

References 13 publications

Study of Flow Instability in a Miniature Centrifugal Pump Based on Energy Gradient Method

Study of Flow Instability in a Miniature Centrifugal Pump Based on Energy Gradient Method

Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump

Study on the internal flow evolution mechanism and pressure pulsation characteristics of the transient process of variable speed regulation of centrifugal pump

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