Study on the influence of the specific area of balance hole on cavitation performance of high- speed centrifugal pump

Cheng, Xiaorui; Chang, Zhengbai; Jiang, Yi

doi:10.1007/s12206-020-0725-z

Cited by 15 publications

(12 citation statements)

References 11 publications

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“…e SST k-ω model has a similar form to the standard k-ω model, including k equation and ω equation [18], and its basic form is as follows:…”

Section: Turbulence Modelmentioning

confidence: 99%

“…In order to describe the process of cavitation bubble development and collapse more accurately, the cavitation model proposed by Rayleigh-Plesset is adopted. e following formula is an idealized basic equation of cavitation bubble dynamics without empirical coefficients [18]:…”

Section: Cavitation Modelmentioning

confidence: 99%

“…e force distribution of the model pump is shown in Figure 13, the axial force of the semiopen impeller is composed of the forces F 1 acting on the rear cover and F 2 acting on the front side of the rear cover, the force F 3 exerted on the impeller by the fluid in the tip clearance and formed by the pressure difference between the working surface and the back of the blade, and the dynamic reaction force F 4 . e calculation formula of the cover force (T 1 ) is as follows [18]:…”

Section: Analysis Of the Axial Force Of The Impellermentioning

confidence: 99%

See 2 more Smart Citations

Influence of the Balance Hole Circumferential Position on the Cavitation Performance of the Semiopen Impeller Centrifugal Pump

Cheng

Luo

Xiong

et al. 2021

Mathematical Problems in Engineering

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In order to study the influence of the circumferential position of the balance hole on the cavitation performance of the semiopen impeller centrifugal pump, a low specific speed semiopen impeller centrifugal pump is taken as the object, and 4 kinds of circumferential positions of balance holes are designed. The SST k-ω turbulence model and the Rayleigh–Plesset cavitation bubble dynamics equation are used to calculate the full flow field of the centrifugal pump. Research shows that, under cavitation conditions, as the circumferential position of the balance hole is farther away from the blade working surface, the cavitation performance of the pump is reduced, and the larger θ (the angle of the balance hole and the leading edge of the blade in the direction of rotation) is, the easier the jet cavitation occurs near the balance hole. On the other hand, with the development of cavitation, the axial force of the impeller has also changed greatly. In contrast, the farther the balance hole is arranged in the circumferential direction (i.e., the greater θ), the more limited is the ability of the balance hole to balance the axial force.

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“…e SST k-ω model has a similar form to the standard k-ω model, including k equation and ω equation [18], and its basic form is as follows:…”

Section: Turbulence Modelmentioning

confidence: 99%

Section: Cavitation Modelmentioning

confidence: 99%

Section: Analysis Of the Axial Force Of The Impellermentioning

confidence: 99%

See 1 more Smart Citation

Influence of the Balance Hole Circumferential Position on the Cavitation Performance of the Semiopen Impeller Centrifugal Pump

Cheng

Luo

Xiong

et al. 2021

Mathematical Problems in Engineering

Self Cite

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“…For the cavitation problem of the pump, adding an inducer is an effective optimization scheme [4,5]. Many scholars have discussed the influence of inducer on performance and flow field in the pump through a numerical simulation method [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the pump heads with different inducer tip clearances are destroyed under similar cavitation numbers. Cheng et al [5] discussed the influence of four variable pitch inducer blades on the cavitation performance of high-speed centrifugal pumps. e results show that appropriately increasing the blade section inclination angle suppresses the cavitation of the leading edge of the blade but has almost no effect on the performance of the inducer.…”

Section: Introductionmentioning

confidence: 99%

Numerical Research on Performance of High‐Speed Partial Emission Pump

Shui¹,

Jiang²,

Pan³

et al. 2021

Shock and Vibration

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The high-speed partial emission pump is a small flow and high-head pump, which has been widely used. To study the main factors affecting the performance of high-speed partial emission pumps, numerical simulation methods were used to calculate the performance parameters of high-speed partial emission pumps with and without inducers, and the external characteristic parameters were verified through comparison test values. The results show that the head of the high-speed partial emission pump with inducer is nearly 15 m higher than that of the high-speed partial emission pump without inducer. Considering the influence of air in the high-speed partial emission pump on the working performance, the two-phase flow with different flow rates, different particle sizes, and different concentrations was calculated, and the different liquid phase distributions, liquid phase velocity vector diagrams, and external characteristic curve were compared. The results show that under the same flow condition, the gas-phase particle diameter has the most severe influence on the external characteristic.

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Effect of rotating, non-axisymmetric cavitator on supercavity size

Kim

Lee

et al. 2022

J Mech Sci Technol

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Study on the influence of the specific area of balance hole on cavitation performance of high- speed centrifugal pump

Cited by 15 publications

References 11 publications

Influence of the Balance Hole Circumferential Position on the Cavitation Performance of the Semiopen Impeller Centrifugal Pump

Influence of the Balance Hole Circumferential Position on the Cavitation Performance of the Semiopen Impeller Centrifugal Pump

Numerical Research on Performance of High‐Speed Partial Emission Pump

Effect of rotating, non-axisymmetric cavitator on supercavity size

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