Local Entropy Generation Analysis for Cavitation Flow Within a Centrifugal Pump

Lai, Fen; Huang, Maoli; Wu, Xiaofei; Nie, Chaoqun; Li, Guojun

doi:10.1115/1.4054467

Cited by 14 publications

(7 citation statements)

References 13 publications

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“…Enhancing the stability, efficiency, and operational longevity of centrifugal pumps is essential for achieving heightened energy efficiency and aligning with global goals for carbon neutrality. Extensive research endeavors have been dedicated to exploring the relationship between energy dissipation and entropy generation in fluid machinery, providing valuable insights into the optimization of pump performance (Jiang et al, 2011;Fan et al, 2022;Lai et al, 2022;Zhang and Tang, 2022).…”

Section: Centrifugal Force In a Bladeless Shrimp Harvester Conceptmentioning

confidence: 99%

Innovating Shrimp Harvesting: The Role of Centrifugal Techniques in Boosting Efficiency and Quality

Thoetrattanakiat,

Samseemoung,

Sangpradit

2023

Preprint

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Efficient shrimp harvesting methods are crucial for sustainable aquaculture, so that, this study is to compared the traditional netting method with an innovative centrifugal technique for white shrimp harvesting in commercial ponds. The primary aim was to assess efficiency, labor needs, shrimp quality, and potential damage reduction within two harvesting methods. Conducted in Thailand over 67 days, the study scrutinized both methods' manpower requirements, shrimp quality, and impact on damage. The traditional netting involved 19 workers and processed 500 kg/hour, showing varied shrimp quality and notable damage. Conversely, the centrifugal method required only 4 workers and achieved the same capacity in 30 minutes, significantly reducing damage percentages. Notably, it displayed minimal damage (0.0171%) for specific shrimp categories like number 4, indicating increased profitability potential. However, further optimization is required for specific categories, such as shrimp number 3 with a soft-shelled condition (1.37%). This study highlights the centrifugal technique's promise for enhancing the aquaculture industry.

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Section: Centrifugal Force In a Bladeless Shrimp Harvester Conceptmentioning

confidence: 99%

Innovating Shrimp Harvesting: The Role of Centrifugal Techniques in Boosting Efficiency and Quality

Thoetrattanakiat,

Samseemoung,

Sangpradit

2023

Preprint

View full text Add to dashboard Cite

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“…Enhancing the stability, efficiency, and operational lifespan of centrifugal pumps is essential to achieve higher energy efficiency and align with global carbon neutrality objectives (Cong et al, 2015, as cited in Qi, 2023Pei et al, 2017). Substantial research endeavors have been dedicated to exploring the relationship 11 between energy dissipation and entropy generation in fluid machinery, providing valuable insights into pump performance optimization (Jiang et al, 2011;Fan et al, 2022;Lai et al, 2022).…”

Section: Centrifugal Force In a Bladeless Shrimp Harvester Conceptmentioning

confidence: 99%

Novelty and Innovation: Enhancing Shrimp Harvesting Efficiency and Quality Through Centrifugal Extraction and Pipe Transportation

thoetrattanakiat,

Samseemoung,

Sangpradit

2023

Preprint

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The innovative integration of a Centrifugal Shrimp Harvester into closed pond aquaculture systems represents a significant advancement in aquaculture technology. This study introduces and assesses the efficiency of the harvester in comparison to manual harvesting methods, examining parameters such as shrimp quality, loss rates, and harvesting speed. Particularly noteworthy is the incorporation of shrimp transportation through a pipeline, introducing a novel dimension that amplifies the transformative potential of the technology. Results underscore that the Centrifugal Shrimp Harvester outperforms manual methods, achieving an impressive yield rate of 3338 kg/hour with a minimal loss rate of 0.01%. While the technology shows promise in increasing productivity and minimizing shrimp damage, a more in-depth investigation is necessary to assess its economic viability, including operational costs and labor expenses. The study not only illuminates the transformative potential of the Centrifugal Shrimp Harvester but also emphasizes the necessity for ongoing research to ensure its practical application in real-world aquaculture settings. The Centrifugal Shrimp Harvester emerges as a transformative force in aquaculture, featuring innovative features and superior performance. It has the potential to revolutionize shrimp harvesting practices, contributing to more sustainable and efficient aquaculture production.

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“…Shu et al [25] applied enstrophy dissipation theory innovatively to provide guidelines for controlling energy dissipation associated with the TLV and to optimize the design of the multiphase pump. Lai et al [26] employed a local entropy production method to analyze cavitation flow with varying NPSH. Yu et al [27] studied the inducing mechanism of entropy production, revealed the influence of cavitation on entropy production, and found that velocity gradient and the cavitation process are the key reasons for entropy production.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Tip Clearance on Cavitation Performance and Entropy Production of an Axial Flow Pump

Yu,

Cheng,

et al. 2024

JMSE

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The clearance existing between the impeller rim and the adjacent shroud within the pump configuration establishes conducive circumstances for the initiation of cavitation. The bubbles generated by cavitation will flow forward with the water, blocking the channel, and result in the degradation of the pump performance. When the cavitation is severe, vibration and noise will be generated. The impact formed by the collapse of the bubbles will seriously erode the blades and form pits on the blade surfaces. Drawing upon the outcomes derived from numerical simulations, this paper investigates the relationship between tip clearance and cavitation in an axial flow pump, with a specific focus on energy dissipation characteristics. The principal findings indicate that the dimensions of the tip clearance predominantly influence the spatial distribution of the tip leakage vortex (TLV) cavitation. The entropy production rate distribution at the tip correlates with both the cavitation level of the pump and the extent of the tip clearance. The shedding phenomenon of the TLV becomes more evident when analyzing the distribution of entropy production rates. During cavitation, an increased tip clearance is associated with a reduction in the dissipation of viscous entropy production within the impeller domain, and the entropy production resulting from turbulent dissipation significantly surpasses that arising from viscous dissipation.

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Local Entropy Generation Analysis for Cavitation Flow Within a Centrifugal Pump

Cited by 14 publications

References 13 publications

Innovating Shrimp Harvesting: The Role of Centrifugal Techniques in Boosting Efficiency and Quality

Innovating Shrimp Harvesting: The Role of Centrifugal Techniques in Boosting Efficiency and Quality

Novelty and Innovation: Enhancing Shrimp Harvesting Efficiency and Quality Through Centrifugal Extraction and Pipe Transportation

Study on the Influence of Tip Clearance on Cavitation Performance and Entropy Production of an Axial Flow Pump

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