Improved Deep Learning Algorithm for Reproduction of Airfoil Flow Field
Yang, Congxin1; Ling, Zuguang1; Wang, Yan2; Qian, Chen1; Zhao, Bin1; Zhou, Nannan1
2021-03-10
发表期刊Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
ISSN0253-987X
卷号55期号:3页码:20-28
摘要In order to overcome the disadvantages of the computational fluid dynamics (CFD) method such as high computational cost and the inability to reuse the computational results, a steady prediction model of pressure and velocity fields for NACA0018 airfoil in α=2°-8°, Re=0.1×106-1.6×106 is established based on deep-learning method using 132 sets of two-dimensional flow data. The energy conservation equation of incompressible flow at low velocity is used as the constraint condition. Considering the correlation between lift drag and surface pressure, an activation function is proposed. The results show that for pressure field prediction the average error of the traditional neural network is about 2.77%, but for velocity field prediction that of the traditional neural network is 11% and the maximum is 26.993%, while the average error of the improved neural network is only 2.77%. Compared with the traditional activation function, the improved activation function neural network is more accurate in predicting airfoil velocity field and the flow field transition is more uniform. Compared with the traditional CFD method, the neural network can obtain the flow field in a few seconds, which can greatly reduce the calculation time. © 2021, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
关键词Airfoils Cell proliferation Chemical activation Computational fluid dynamics Deep learning Flow fields Forecasting Incompressible flow Learning algorithms Learning systems Predictive analytics Transpiration Velocity Activation functions Computational costs Computational fluid dynamics methods Computational results Constraint conditions Energy conservation equations Surface pressures Two-dimensional flow
DOI10.7652/xjtuxb202103003
收录类别EI
语种中文
出版者Xi'an Jiaotong University
EI入藏号20211310141439
EI主题词Neural networks
EI分类号461.9 Biology ; 631.1 Fluid Flow, General ; 652.1 Aircraft, General ; 723.5 Computer Applications ; 804 Chemical Products Generally
引用统计
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/148402
专题能源与动力工程学院
作者单位1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
2.Nuclear Power Institute of China, Chengdu; 610000, China
第一作者单位能源与动力工程学院
第一作者的第一单位能源与动力工程学院
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GB/T 7714
Yang, Congxin,Ling, Zuguang,Wang, Yan,et al. Improved Deep Learning Algorithm for Reproduction of Airfoil Flow Field[J]. Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University,2021,55(3):20-28.
APA Yang, Congxin,Ling, Zuguang,Wang, Yan,Qian, Chen,Zhao, Bin,&Zhou, Nannan.(2021).Improved Deep Learning Algorithm for Reproduction of Airfoil Flow Field.Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University,55(3),20-28.
MLA Yang, Congxin,et al."Improved Deep Learning Algorithm for Reproduction of Airfoil Flow Field".Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 55.3(2021):20-28.
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