Influence of rotor–stator component partition structure on the aerodynamic performance of centrifugal compressors

Li, Chunyang; Ji, Chunjun; Shi, M.; Sun, Qi

doi:10.1080/19942060.2019.1669075

Cited by 8 publications

(3 citation statements)

References 32 publications

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“…The impeller also has an important impact on the performance improvement of the compressor, so a lot of research work has been carried out by scholars in the design optimization of the compressor [19][20][21][22]. Li et al studied a set of high-speed compressor impellers with different geometries and analyzed the secondary flow model, where the ratio of impeller inlet diameter to outlet diameter has an effect on the impeller flow uniformity, which, in turn, affects the compressor efficiency [23].…”

Section: Introductionmentioning

confidence: 99%

Design of Electric Supercharger Compressor and Its Performance Optimization

Wei

et al. 2023

Processes

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The performance of the centrifugal compressor, which is the main component of the electric supercharger, significantly impacts the engine’s dynamics, economy, emissions, and responsiveness. The purpose of this paper is to enhance the aerodynamic performance of the centrifugal compressor of the electric supercharger for the two-stroke engine by optimizing the design of its impeller and diffuser parameters. The paper employs the numerical simulation method and applies the Spalart–Allmaras turbulence model to solve the RANS equations to analyze the impact of impeller-related parameters on the centrifugal compressor’s performance. Subsequently, the paper optimizes the initial model parameters based on the simulation results and confirms its performance through an experiment. The findings indicate that enhancing the isentropic efficiency and pressure ratio of the compressor can be achieved by increasing the number of blades on the impeller, selecting an appropriate blade backward angle, and increasing the relative outlet width. After optimization, the compressor’s efficiency can achieve 0.842, the pressure ratio can reach 1.49 with a working margin of 22%, and the efficiency is enhanced by 1.4%, while the pressure ratio is increased by 1.8% compared to the pre-optimization state. Moreover, the optimized model is experimentally validated to meet the design requirements.

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Section: Introductionmentioning

confidence: 99%

Design of Electric Supercharger Compressor and Its Performance Optimization

Wei

et al. 2023

Processes

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“…Qin [10] found the cavity flow has little impact on the flow field in the upstream impeller, but it significantly increases the flow loss in the downstream diffuser. Li [11] calculated and analyzed the internal flow field characteristics of the IBC and its influence on the performance of the whole machine. Liu [12] summarized the influence of the change in radial position of the swirl-controlled orifice on the pressure distribution, and the effect of the axial load on the rotating disk under various radial inflow (including Re ω , C w , G, β 0 , λ T , etc.).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES

Lin

Zuo

et al. 2022

Energies

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Relying on a closed test rig of a high-power intercooling centrifugal compressor for compressed air energy storage (CAES), this study measured the static pressure and static temperature at different radii on the static wall of the impeller backside cavity (IBC) under variable rotating speeds. Simultaneously, the coupled computations of all mainstream domains with IBC or not were used for comparative analysis of the aerodynamic performances of the compressor and the internal flow field in IBC. The results show that IBC has a significant impact on coupling characteristics including pressure ratio, efficiency, torque, shaft power, and axial thrust of the centrifugal compressor. The gradients of radial static pressure and static temperature in IBC both increase with the decrease of mainstream flow or the increase of rotating speed, whose distributions are different under variable rotating speeds due to the change of the aerodynamic parameters of mainstream.

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“…Akbarian et al (2018) used a CFD method to simulate the use of natural gas in a dual-fueled diesel engine. Li, Ji, Shi, and Sun (2019) used CFD to numerically evaluate the influence of the rotor-stator partition structure on the aerodynamic performance of the centrifugal compressor and its loss mechanism. It can be seen from the above research and applications that CFD is an important engineering method for describing the flow and heat transfer inside or outside the equipment, especially for complicated structural components.…”

Section: Introductionmentioning

confidence: 99%

One-dimensional and three-dimensional computational thermal fluid hybrid analysis-aided air distribution pipeline system design

Zeng

2020

Engineering Applications of Computational Fluid Mechanics

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The air distribution system is an essential aircraft system, helping to create a safe, healthy and thermally comfortable cabin environment for large-scale aircraft. This complex pipe network system contains a large number of pipes, valves, elbows, joints and flow devices. The enormous number of components poses a severe challenge to the efficiency, accuracy and convergence of system thermal fluid analysis. Traditional three-dimensional (3D) computational fluid dynamics (CFD) methods can describe the system internal flow and heat transfer performance in detail with complex mesh models and extremely low calculation efficiency, while one-dimensional (1D) fluid system simulation methods have better computational efficiency but insufficient calculation accuracy. This study proposes a method to implement efficient and accurate simulation to solve this problem. 1D fluid system analysis models are established to obtain the P-Q characteristic curve of each pipeline subsystem. These 1D models are also used to evaluate the uniformity of air flow into each compartment of the aircraft cabin and the thermal insulation performance of system pipelines. The 3D CFD model is built to evaluate the air distribution performance of the mix manifold using the subsystem P-Q characteristics as the boundary conditions. The air distribution analysis based on the CFD model is compared with that using the 1D fluid system model in the same boundary conditions. The results show that more than 7% deviation occurs if the influence of the mix manifold structure on its internal flow is ignored.

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Influence of rotor–stator component partition structure on the aerodynamic performance of centrifugal compressors

Cited by 8 publications

References 32 publications

Design of Electric Supercharger Compressor and Its Performance Optimization

Design of Electric Supercharger Compressor and Its Performance Optimization

Experimental and Numerical Analysis of the Impeller Backside Cavity in a Centrifugal Compressor for CAES

One-dimensional and three-dimensional computational thermal fluid hybrid analysis-aided air distribution pipeline system design

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