Global sensitivity analysis and optimization for coal–water slurry preheaters based on metamodel of optimal prognosis

Xiao, Juan; Lin, Weixiang; Wang, Simin; Zhang, Zaoxiao

doi:10.1080/10407782.2022.2079336

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…CoP CoP S = (6) Figure 8 illustrates the sensitivity analysis framework [15] based on the MoP, where 15 parameters are considered as inputs, including three inlet edge parameters and 12 profile line parameters for the impeller blades, while the outputs are the impeller pressure rise ∆P at the critical cavitation condition and the cavitation volume fraction Cv. Herein, the cavitation volume fraction refers to the ratio of the volume of cavitation nuclei to the total volume of the flow passage.…”

Section: Ti Timentioning

confidence: 99%

Optimization of Cavitation Performance of High-Speed Centrifugal Pump Based on the Meta-Model of optimal Prognosis

Wang,

Zhang,

Miao

et al. 2024

J. Phys.: Conf. Ser.

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Using a specific type of high-speed centrifugal pump as an example, this study conducted a parameterized optimization design on geometric parameters of the impeller’s flow path. A response sample space was generated with the flow path geometric parameters as input and pressure increment and cavitation volume as output. Based on the Meta-Model of optimal Prognosis, the optimal surrogate model was fitted, and a global sensitivity analysis was conducted. The results indicated that the impeller’s inlet edge parameter and mid-curve parameter had a significant impact on the pressure increment and cavitation volume of the pump. Using a genetic algorithm, the optimal flow path geometric parameters were obtained, and numerical simulation methods were applied to verify the obtained parameters. The results showed that after optimization, the pressure coefficient of the centrifugal pump increased by 0.035, and the cavitation performance improved by 22.28%. The impeller cavitation area and void volume were significantly reduced, and the flow path pressure distribution and flow state were improved.

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Section: Ti Timentioning

confidence: 99%

Optimization of Cavitation Performance of High-Speed Centrifugal Pump Based on the Meta-Model of optimal Prognosis

Wang,

Zhang,

Miao

et al. 2024

J. Phys.: Conf. Ser.

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“…It has the advantages of a compact structure, highpressure resistance, and extensive heat exchange area per unit volume. [3][4][5] The better performance of the spiral wound tube heat exchanger is mainly due to the following three aspects: the contrary direction of the adjacent tube can form a strong turbulent effect on the shell side; the spiral tubes have a strengthening effect on the flow in the tube side; and the spacing bars and other components cause disturbance to the flow of the shell side. [6,7] Some experimental investigations were carried out to enhance the performance of the SWHE.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and structure optimization of spiral wound heat exchanger with novel spacing bars

Duan,

Zhou,

Xiao

et al. 2023

Can J Chem Eng

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Spiral wound heat exchangers are widely used in industrial production for their advantages, such as large heat transfer areas and compact structures. However, their compact design also poses significant difficulties for numerical simulation and experimental research. The spacing bar between tube bundles has an essential impact on the performance of wound tube heat exchangers. This paper presents a new type of spacing bar vertically installed on the core barrel of the spiral wound heat exchanger to enhance the comprehensive heat transfer performance. A numerical model of a new type of wrapped tube heat exchanger has been constructed, which agrees with experimental results. Under the same working conditions, the comprehensive heat transfer performance on the shell side of the spiral wound heat exchanger with new spacing bars is increased by 7.4%–10.5% compared with the traditional structure. On this basis, the influence of the new spacing bar's structural parameters on the heat exchanger's performance was studied, and the empirical correlation between the structural parameters and operating conditions of the new spacing bar and the performance of the heat exchanger was fitted. The research results have guiding significance for the design of spiral wound heat exchangers.

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Multi-objective optimization of water electrolysis based on coupling model of electrochemistry and multiphase flow

Duan,

Xiao,

Peng

et al. 2023

Journal of Environmental Chemical Engineering

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Global sensitivity analysis and optimization for coal–water slurry preheaters based on metamodel of optimal prognosis

Cited by 5 publications

References 35 publications

Optimization of Cavitation Performance of High-Speed Centrifugal Pump Based on the Meta-Model of optimal Prognosis

Optimization of Cavitation Performance of High-Speed Centrifugal Pump Based on the Meta-Model of optimal Prognosis

Numerical simulation and structure optimization of spiral wound heat exchanger with novel spacing bars

Multi-objective optimization of water electrolysis based on coupling model of electrochemistry and multiphase flow

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