Intelligence design method for three-dimensional vaned diffusers in a centrifugal compressor

Wang, Jian; Wen, Suping; Wang, Wenbo; Xi, Guang

doi:10.1177/0957650917750713

Cited by 4 publications

(2 citation statements)

References 56 publications

(93 reference statements)

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“…Although it is difficult to give universal design principles, it is feasible to design the diffuser by using the blade load distribution. Wang [16] and Engeda [17] both use intelligent methods to optimize three-dimensional blades, while it is somewhat difficult for the current industrial production and application.…”

Section: Introductionmentioning

confidence: 99%

Investigation of New Design Principles for the Centrifugal Compressor Vaned Diffusers

Sun

et al. 2022

International Journal of Aerospace Engineering

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Diffuser’s aerodynamic performance is crucial for the centrifugal compressors, while at present the universal principles for the optimization design of the vaned diffusers are still not available. In this paper, three vaned diffusers with different inlet Mach numbers were numerically studied in order to explore new design principles for the centrifugal compressor vaned diffusers. It proved that there are practical and effective design principles for the vaned diffuser optimizations, the performance of the vaned diffuser can be improved by carefully control of two aerodynamic parameter distributions: Tangential velocity (Vt) and Meridional velocity (Vm). The vaned diffusers with subsonic, transonic and supersonic inlet conditions were optimized with the new design principles, and the peak efficiencies were increased by 4.23%, 2.15% and 2.59%, respectively. The stage pressure ratios were increased by 3.36%, 1.39% and 6.49%, respectively, and their surge margins were also improved substantially. Finally, since the Vt and Vm could affect each other during the optimization process, an interactive optimization design procedure was also presented in this paper in order to accelerate the optimization process.

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Section: Introductionmentioning

confidence: 99%

Investigation of New Design Principles for the Centrifugal Compressor Vaned Diffusers

Sun

et al. 2022

International Journal of Aerospace Engineering

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“…The main advantages of multistage centrifugal compressors are their high robustness, easy handling, low maintenance costs and compact size. [1][2][3] One of the main challenges in the design of multistage centrifugal compressors is to deliver the flow to the next stage with a uniform velocity profile and minimum losses. In a singleshaft multistage centrifugal compressor, several stator components are commonly used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

The effects of the return channel geometry on the aerodynamic performance of a centrifugal compressor: A numerical study

Safari

Anbarsooz

Niazmand

2023

Proceedings of the Institution of Mechanical Engineers, Part A:

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In this paper, steady RANS (Reynolds-Averaged Navier-Stokes) numerical modeling of the return system of a centrifugal compressor is carried out to investigate the effects of various geometrical parameters on the aerodynamic performance of the return system. The effects of using splitter vanes in the return-channel, the width ratio of the return channel and the diverging angle of the walls are examined. Numerical results revealed that using splitter vanes can enhance the stage averaged pressure ratio and polytropic efficiency by 0.74 and 3.21%, respectively. Results showed that increasing the width ratio can enhance the efficiency and pressure ratio near the choke region, however, it has marginal effects on the performance at low flow coefficients. Results also showed that, due to the negligible effects of the diverging angle on the stage performance, using diverging hub wall can reduce the total axial length of the multistage compressor. Finally, a new return system is designed based on the combination of the best geometrical parameters found in the current study. Simulation results demonstrated that the average pressure ratio and efficiency of the compressor have been improved by 0.99% and 4%, respectively, by the newly developed return system compared to the original design.

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A Non-intrusive Anomaly Detection Method for Distribution Integration Terminal

Jiang

et al. 2021

Proceedings of the 11th International Conference on Computer Engineering and Networks

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In recent years, with the accelerated development of power IoT construction, the edge intelligent terminal devices have been developed and widely used to effectively cope with the major challenges to the distribution network communication network. However, the distribution convergence terminal is at the edge of the network and the possibility of network attack is large and the traditional detection methods are mostly used after the occurrence of accidents, which cannot achieve timely detection and early warning of terminal abnormal behavior. In this paper, the non-intrusive distribution convergence terminal anomaly detection method is proposed. Specifically, the power consumption information of the main board is collected and analyzed in the device side channel. One normal program and one abnormal program are run respectively to extract the equipment status information hidden in the power consumption data. Moreover, in order to achieve more accurate equipment anomaly detection, the core algorithm based on LSTM neural network system is proposed to learn the data for a long time and build a prediction model. The simulation results show that the algorithm proposed in this paper has high accuracy and low error.

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Intelligence design method for three-dimensional vaned diffusers in a centrifugal compressor

Cited by 4 publications

References 56 publications

Investigation of New Design Principles for the Centrifugal Compressor Vaned Diffusers

Investigation of New Design Principles for the Centrifugal Compressor Vaned Diffusers

The effects of the return channel geometry on the aerodynamic performance of a centrifugal compressor: A numerical study

A Non-intrusive Anomaly Detection Method for Distribution Integration Terminal

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