Time-marching throughflow analysis of multistage axial compressors based on a novel inviscid blade force model

Yang, Chen; Wu, Haidong; Yang, Jinguang; Ferlauto, Michele

doi:10.1177/0954410019840588

Cited by 23 publications

(18 citation statements)

References 39 publications

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“…The model was verified based on experimental studies of a transonic axial stage and a three-stage P&W 3S1 compressor. The work [10] presents the concept of the through flow method. In recent decades, the through flow method has become one of the most important tools for designers -a compromise between the accuracy of the flow field representation and the corresponding computational cost.…”

Section: Literature Reviewmentioning

confidence: 99%

Analysis of the Efficiency of Elementary Grids of Axial Compressors Based on the Data of Flat Grid Purges

Borovkov

Galerkin

Popov

et al. 2020

Wseas Transactions on Applied and Theoretical Mechanics

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Published data on flat grid purges allow to evaluate the efficiency of blade devices with different kinematic scheme of stages and design parameters. The authors present the main provisions of the calculation program algorithm and some results of numerical analysis of the efficiency of flat grids of axial stages with different combinations of design parameters. The content of the article and the computer program are addressed to people who are improving their knowledge of gas dynamics of axial compressors. Some of the results may be of interest to specialists working professionally in this field.

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Section: Literature Reviewmentioning

confidence: 99%

Analysis of the Efficiency of Elementary Grids of Axial Compressors Based on the Data of Flat Grid Purges

Borovkov

Galerkin

Popov

et al. 2020

Wseas Transactions on Applied and Theoretical Mechanics

View full text Add to dashboard Cite

show abstract

“…The authors present the results of verification of their model for two axial compressors. The work [11] presents the concept of the through flow method. In recent decades, the through flow method has become one of the most important tools for designers -a compromise between the accuracy of the flow field representation and the corresponding computational cost.…”

Section: Literature Reviewmentioning

confidence: 99%

Computational Analysis of Axial Compressor Stages Characteristics

Borovkov

Galerkin

Popov

et al. 2020

Wseas Transactions on Applied and Theoretical Mechanics

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Published data on flat grid purges allow to evaluate the efficiency of blade devices with different kinematic scheme of stages and design parameters. The corresponding computer program ODOS-GP04 and examples of numerical analysis of the efficiency of flat grids and spatial blade devices of axial stages with different combinations of design parameters was provided. Further development of the ODOS-GP04 program is described below, which makes it possible to perform an estimated calculation of the gas-dynamic characteristics of the stages designed using this program. Analysis of the calculated characteristics of a number of typical stages allows to draw a conclusion about the influence of the main design parameters. This article is primarily addressed to people who are developing their knowledge of the gas dynamics of axial compressors. Some results of calculations do not correspond to the published experimental data. The authors expect that this may attract the attention of specialists working in the field of gas dynamics of axial compressors.

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“…This situation usually happens in high rotational speed regions, where SLC has a higher prediction error with the experiment as shown. Some alternative methods are developed to solve this problem, such as the implementation of dedicated models for the choke regions, localized choked flow treatment [39], or time marching through-flow method [40], which is out of the scope of this article. For the comparison of the different models, treatment of this defect is not taken into consideration in this work.…”

Section: Comparison With Empirical Modelsmentioning

confidence: 99%

Surrogate Models for Performance Prediction of Axial Compressors Using through-Flow Approach

Liu

Ricks

et al. 2019

Energies

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Two-dimensional design and analysis issues on the meridional surface, which is important in the preliminary design procedure of compressors, are highly dependent on the accuracy of empirical models, such as the prediction of total pressure loss model and turning flow angle. Most of the widely used models are derived or improved from experimental data of some specific cascades with low-loading and low-speed airfoil types. These models may work for most conventional compressors but are incapable of accurately estimating the performance for some specific cases like transonic compressors. The errors made by these models may mislead the final design results. Therefore, surrogate models are developed in this work to reduce the errors and replace the conventional empirical models in the through-flow calculation procedure. A group of experimental data considering a two-stage transonic compressor is used to generate the airfoils database for training the surrogate models. Sensitivity analysis is applied to select the most influential features. Two supervised learning approaches including support vector regression (SVR) and Gaussian process regression (GPR) are used to train the models with a Bayesian optimization algorithm to obtain the optimal hyper parameters. The trained models are integrated into the through-flow code based on streamline curvature method (SLC) to predict the overall performance and internal flow field of the transonic compressor on five rotational speed lines for validation. The predictions are compared with the experimental data and the results of conventional empirical models. The comparison shows that SVR and GPR respectively reduce the predicted error of empirical models by 62.2% and 55.2% for the total pressure ratio and 48.4% and 50.1% for adiabatic efficiency on average. This suggests that the surrogate models constitute an alternative way to predict the performance of airfoils in through-flow calculation where empirical models are inefficient.

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Time-marching throughflow analysis of multistage axial compressors based on a novel inviscid blade force model

Cited by 23 publications

References 39 publications

Analysis of the Efficiency of Elementary Grids of Axial Compressors Based on the Data of Flat Grid Purges

Analysis of the Efficiency of Elementary Grids of Axial Compressors Based on the Data of Flat Grid Purges

Computational Analysis of Axial Compressor Stages Characteristics

Surrogate Models for Performance Prediction of Axial Compressors Using through-Flow Approach

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