Research on the Simplified Design of a Centrifugal Compressor Impeller Based on Meridional Plane Modification

Xie, Hong; Song, Moru; Liu, Xiaolan; Yang, Bo; Gu, Changzhan

doi:10.3390/app8081339

Cited by 14 publications

(8 citation statements)

References 20 publications

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“…CFD techniques have been widely used to study the internal flow of centrifugal impellers [21][22][23][24]. In this paper, the steady-state flow field of a centrifugal impeller is obtained by solving the three-dimensional (3D) steady-state Reynolds averaged Navier-Stokes equation using NUMECA's Fine Turbo solver.…”

Section: Methodsmentioning

confidence: 99%

Multi-Objective Aerodynamic Design Optimisation Method of Fuel Cell Centrifugal Impeller Using Modified NSGA-II Algorithm

Liu

et al. 2021

Applied Sciences

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This paper presents a modified NSGA-II algorithm based on the spatial density (SD) operator, combined with computer graphics-based surface parameterisation methods and computational fluid dynamics (CFD) simulations. This was done to optimise the multi-objective aerodynamic design of a centrifugal impeller for a 100-kW vehicle-mounted fuel cell and improve the multi-conditions aerodynamic performance of the centrifugal impeller of the vehicle-mounted fuel cell (FC). The optimisation objectives are to maximise the isentropic efficiency of the rated and common operating conditions. The optimisation results showed that the efficiency of rated working conditions had an increase of 1.29%, mass flow increase of 8.8%, pressure ratio increase of 0.74% and comprehensive margin increase of 6.2%. The efficiency of common working conditions had an increase of 1.2%, mass flow increase of 9.1%, pressure ratio increase of 0.24% and comprehensive margin increase of 10%. The optimisation effect is obvious under the premise of satisfying the constraints, which proves the optimisation method’s engineering effectiveness and provides technical support and methodological research for the multi-objective aerodynamic design optimisation of centrifugal impellers for vehicle-mounted FCs.

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Section: Methodsmentioning

confidence: 99%

Multi-Objective Aerodynamic Design Optimisation Method of Fuel Cell Centrifugal Impeller Using Modified NSGA-II Algorithm

Liu

et al. 2021

Applied Sciences

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“…There are works on the design of impellers with different blade shapes and different productivity in the literature [1]- [6]. There are three types of blades: backward curved blades with an entry angle β2 < 90°, radial exit blades (β2 = 90°), forward curved blades (β2 > 90°).…”

Section: Introductionmentioning

confidence: 99%

“…The impeller is the most important and critical part of the compressor. In works [1]- [6], considerable attention is paid to the design of impellers, the improvement and optimization of their geometric and operating parameters, gasdynamic calculation and CFD-modelling are carried out.…”

Section: Introductionmentioning

confidence: 99%

A Methodology and Information System for Computing and Optimization of Impellers and Vanned Diffusers Geometry Parameters

Nengjun¹,

Ryzhkov²,

Topalov

et al. 2022

Applied Computer Systems

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The study aims to develop an information-computing complex for computer design of a centrifugal compressor with parallel calculation of stages and optimization of the geometric parameters of the impellers and the diffusers. The paper presents a universal methodology and computerized information system of the main geometry parameter determination and optimization of the centrifugal compressor impellers and vanned diffusers. Optimization of cross-sectional areas of the input and output channels of the impeller and diffuser blade channels is held using a gradient descent method by gas flowrate quadratic integral deviation criteria. The information-computing complex is built on the algorithm proposed by the authors and implemented as a computer program with a human-machine interface. Calculation data are written in the form of numerical arrays with the possibility of interpolating data and obtaining graphical dependencies.

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“…There are three types of blades: backward curved blades with an entry angle, radial exit blades and forward curved blades. In works (Xie at al., 2018;Kim at al., 2010;Mojaddam and Pullen, 2019) considerable attention is paid to the design of impellers, the improvement and optimization of their geometric and operating parameters, as well as gas-dynamic calculation. The second most important element of the centrifugal compressor is the diffuser (Emre and Cadirci, 2022;Seyed AmirHosein and Kosasih, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…However, the study of the flow field over the rotor blades in a closed turbine has not received much attention. The papers (Xie, et al, 2018) propose an optimal design method, in which the hub line in the meridional plane is changed and optimized based on numerical simulation data. In addition, the aerodynamic characteristics are compared in detail between the prototype and three modified impellers.…”

Section: Introductionmentioning

confidence: 99%

Efficiency Improvement of a Centrifugal Compressor Stage with the Parametric Optimization of the Impeller Blades

Ben

Ryzhkov²,

Topalov

et al. 2022

Journal of Applied Engineering Sciences

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This work relates to the energy industry, in particular, complements the existing knowledge about a problem of increasing the overall efficiency of a centrifugal compressor stage by improving the geometric parameters of an impeller. The design features of the centrifugal compressors are analysed and the issues of their general modelling are considered in the article. The aim of the work is to increase the efficiency of the centrifugal compressor stage by improving the method of thermogasdynamic calculation with an extended determination of the number of its thermogasdynamic gas parameters and subsequent optimization of the design parameters of the impeller blades. This goal is achieved by solving the following problems: a) development of a model of the centrifugal compressor stage based on a method of thermogasdynamic calculation; b) study of the influence of the geometric parameters of the impeller and a diffuser on the components of gas velocities; c) improvement of the design methodology by optimizing the number of impeller blades, their thickness and angle of inclination to increase the efficiency of the stage. The most significant scientific results of the work are the construction method and the model of the centrifugal compressor stage, which allow taking into account real thermogasdynamic gas processes and calculating the geometric parameters of the impeller blades that are optimal in terms of efficiency.

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Research on the Simplified Design of a Centrifugal Compressor Impeller Based on Meridional Plane Modification

Cited by 14 publications

References 20 publications

Multi-Objective Aerodynamic Design Optimisation Method of Fuel Cell Centrifugal Impeller Using Modified NSGA-II Algorithm

Multi-Objective Aerodynamic Design Optimisation Method of Fuel Cell Centrifugal Impeller Using Modified NSGA-II Algorithm

A Methodology and Information System for Computing and Optimization of Impellers and Vanned Diffusers Geometry Parameters

Efficiency Improvement of a Centrifugal Compressor Stage with the Parametric Optimization of the Impeller Blades

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