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Study on the Intelligent Modeling of the Blade Aerodynamic Force in Compressors Based on Machine Learning

Author

Listed:
  • Mingming Zhang

    (Faculty of Science, Beijing University of Technology, Beijing 100124, China)

  • Shurong Hao

    (Faculty of Science, Beijing University of Technology, Beijing 100124, China)

  • Anping Hou

    (School of Energy and Power, Beihang University, Beijing 100191, China)

Abstract

In order to obtain the aerodynamic loads of the vibrating blades efficiently, the eXterme Gradient Boosting (XGBoost) algorithm in machine learning was adopted to establish a three-dimensional unsteady aerodynamic force reduction model. First, the database for the unsteady aerodynamic response during the blade vibration was acquired through the numerical simulation of flow field. Then the obtained data set was trained by the XGBoost algorithm to set up the intelligent model of unsteady aerodynamic force for the three-dimensional blade. Afterwards, the aerodynamic load could be gained at any spatial location during blade vibration. To evaluate and verify the reliability of the intelligent model for the blade aerodynamic load, the prediction results of the machine learning model were compared with the results of Computation Fluid Dynamics (CFD). The determination coefficient R 2 and the Root Mean Square Error (RMSE) were introduced as the model evaluation indicators. The results show that the prediction results based on the machine learning model are in good agreement with the CFD results, and the calculation efficiency is significantly improved. The results also indicate that the aerodynamic intelligent model based on the machine learning method is worthy of further study in evaluating the blade vibration stability.

Suggested Citation

  • Mingming Zhang & Shurong Hao & Anping Hou, 2021. "Study on the Intelligent Modeling of the Blade Aerodynamic Force in Compressors Based on Machine Learning," Mathematics, MDPI, vol. 9(5), pages 1-14, February.
    • Handle: RePEc:gam:jmathe:v:9:y:2021:i:5:p:476-:d:505675
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    References listed on IDEAS

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    1. Liu, Ming & Tan, Lei & Cao, Shuliang, 2019. "Dynamic mode decomposition of cavitating flow around ALE 15 hydrofoil," Renewable Energy, Elsevier, vol. 139(C), pages 214-227.
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