A Practical Method for Speeding up the Cavitation Prediction in an Industrial Double-Suction Centrifugal Pump

Pei, Ji; Osman, Majeed Koranteng; Wang, Yiyun; Appiah, Desmond; Yin, Tingyun; Deng, Qifan

doi:10.3390/en12112088

Cited by 11 publications

(6 citation statements)

References 35 publications

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“…The fluid flow through the pipeline and centrifugal pump is controlled by the valve, which determines the discharge head and suction head. The suction head influences the fluid flow pressure, while the discharge head determines the fluid flow rate [21]. The fluid flow through the test pipe returns to the storage tank.…”

Section: Experimental Methods Of Centrifugal Pump Impeller Designmentioning

confidence: 99%

Investigation of the Performance of a Centrifugal Pump Impeller Design with the Addition of a Junction Disc Plate

Pane

Hidayat

Sukma

et al. 2023

Period. Polytech. Mech. Eng.

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This research analyzes the impeller design performance that has been modified based on previous impeller designs. The previous impeller design used high engine power consumption due to the total head, so the modification of the impeller design is expected to reduce the engine power consumption. The existing design and the modified impeller design with the addition of the junction disc plate are used by this research. This research used experiment methods and theoretical methods to compare both of impeller design performances. The experiment method measures total head, fluid capacity, engine speed, and engine power consumption. The theoretical method analyzes actual fluid velocity, specific velocity, total suction head, NPSH, and pump efficiency. The results showed that the fluid flow rate was able to increase the efficiency of the centrifugal pump by 2.8%. The conclusion explains that the addition of a junction disc plate produces energy from a steady fluid flow rate to reduce the engine power consumption and escalation of pump efficiency.

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Section: Experimental Methods Of Centrifugal Pump Impeller Designmentioning

confidence: 99%

Investigation of the Performance of a Centrifugal Pump Impeller Design with the Addition of a Junction Disc Plate

Pane

Hidayat

Sukma

et al. 2023

Period. Polytech. Mech. Eng.

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“…is has been done in the previous studies [26]. Figure 7 compares the time-averaged transient simulation results at an impeller rotation of 3°with the experimental test results.…”

Section: Validation Of Numerical Modelmentioning

confidence: 96%

“…Afterwards, the discharge valve was gradually shut, and the power was cut to shut down the pump. e experimental process had a measurement uncertainty of ±0.411%, based on the Type B approach for evaluation of experimental uncertainty [26].…”

Section: Validation Of Numerical Modelmentioning

confidence: 99%

Efficiency-House Optimization to Widen the Operation Range of the Double-Suction Centrifugal Pump

et al. 2020

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Most pumping machineries have a problem of obtaining a higher efficiency over a wide range of operating conditions. To solve that problem, an optimization strategy has been designed to widen the high-efficiency range of the double-suction centrifugal pump at design (Qd) and nondesign flow conditions. An orthogonal experimental scheme is therefore designed with the impeller hub and shroud angles as the decision variables. Then, the “efficiency-house” theory is introduced to convert the multiple objectives into a single optimization target. A two-layer feedforward artificial neural network (ANN) and the Kriging model were combine based on a hybrid approximate model and solved with swarm intelligence for global best parameters that would maximize the pump efficiency. The pump performance is predicted using three-dimensional Reynolds-averaged Navier–Stokes equations which is validated by the experimental test. With ANN, Kriging, and a hybrid approximate model, an optimization strategy is built to widen the high-efficiency range of the double-suction centrifugal pump at overload conditions by 1.63%, 1.95%, and 4.94% for flow conditions 0.8Qd, 1.0Qd, and 1.2Qd, respectively. A higher fitting accuracy is achieved for the hybrid approximation model compared with the single approximation model. A complete optimization platform based on efficiency-house and the hybrid approximation model is built to optimize the model double-suction centrifugal pump, and the results are satisfactory.

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“…where P t1 denotes the inlet total pressure. Meanwhile, Pei et al 10 applied flow rate and static pressure as the boundary conditions of inlet and outlet with developed specific algorithms to avoid repeated analysis, however, there were still some issues regarding confirmation of convergence.…”

Section: Cavitation Analysismentioning

confidence: 99%

“…The changes in flow rate affect the incidence angle, meaning that the pressure (head) of the cavity inception is the lowest at a certain incidence angle. [8][9][10] Moreover, Zhu et al 11 analyzed the effect of the incidence angle on the cavitation phenomenon as a correlation with a difference of hydrofoil setting angles. Christopher et al 5 designed the impeller leading edge (LE) into the square, ellipse, and circular shapes, respectively, to investigate that the shape of the impeller LE is related to the inlet flow and cavitation.…”

Section: Introductionmentioning

confidence: 99%

Effect of incidence angle on cavity blockage and flow stability in the net positive suction head drop of mixed-flow pumps

Kim

Lee

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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The cavitation is an inevitable factor in pumps used in the whole industry, which is a major cause of energy loss and mechanical breakdown. In this study, the cavitation phenomena at the design flow rate were numerically analyzed for two pumps with different incidence angles. The design flow rate for both models was located near the best efficiency point (BEP). The incidence angle was determined with the impeller inlet diameter and the blade angle. A pump with a smaller incidence angle consistently showed a stable flow pattern as the inlet pressure decreased, whereas a pump with a larger incidence angle contained non-uniform flow streamlines despite a very small amount of the generated cavities. The flow pattern at the impeller inlet was handled by the shape and thickness of the generated cavities which could act as an additional blockage in the pumps. The inception and growth of the cavity with a decrease of inlet pressure were also inferred, which was specifically quantified as the blockage ratio. A pump with a larger incidence angle performed poor cavitation characteristics and obtained the pressure fluctuation and cavity oscillation. The magnitude of pressure fluctuation was indicated using the fast Fourier transform (FFT) analysis. The experimental tests were performed on both pumps to validate the numerical results.

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A Practical Method for Speeding up the Cavitation Prediction in an Industrial Double-Suction Centrifugal Pump

Cited by 11 publications

References 35 publications

Investigation of the Performance of a Centrifugal Pump Impeller Design with the Addition of a Junction Disc Plate

Investigation of the Performance of a Centrifugal Pump Impeller Design with the Addition of a Junction Disc Plate

Efficiency-House Optimization to Widen the Operation Range of the Double-Suction Centrifugal Pump

Effect of incidence angle on cavity blockage and flow stability in the net positive suction head drop of mixed-flow pumps

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