Learning Neural-Network-Based Turbulence Models for External Transonic Flows Using Ensemble Kalman Method

doi:10.2514/1.J062664

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	Learning Neural-Network-Based Turbulence Models for External Transonic Flows Using Ensemble Kalman Method
	Liu Y(刘毅); Zhang XL(张鑫磊); He GW(何国威)
刊名	AIAA JOURNAL
	2023-05
ISSN号	0001-1452
DOI	10.2514/1.J062664
英文摘要	This paper presents a neural-network-based turbulence modeling approach for transonic flows based on the ensemble Kalman method. The approach adopts a tensor-basis neural network for the Reynolds-stress representation, with modified inputs to consider fluid compressibility. The normalization of input features is also investigated to avoid feature collapsing in the presence of shock waves. Moreover, the turbulent heat flux is accordingly estimated with the neural-network-based turbulence model based on the gradient diffusion hypothesis. The ensemble Kalman method is used to train the neural network with the experimental data in velocity and wall pressure due to its derivative-free nature. The proposed framework is tested in two canonical configurations, that is, two-dimensional transonic flows over the RAE2822 airfoils and three-dimensional transonic flows over the ONERA M6 wings. Numerical results demonstrate the capability of the proposed method in learning accurate turbulence models for external transonic flows.
分类号	一类/力学重要期刊
WOS研究方向	WOS:000991422500001
语种	英语
资助机构	National Natural Science Foundation of China's Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics [11988102] ; National Natural Science Foundation of China [12102439, 12102435] ; China Postdoctoral Science Foundation [2021M703290, 2021M690154]
其他责任者	Zhang, XL ; He, GW
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92207]
专题	力学研究所_非线性力学国家重点实验室
作者单位	(Liu Yi, Zhang Xin-Lei, He Guowei) Univ Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100049 Peoples R China
推荐引用方式 GB/T 7714	Liu Y,Zhang XL,He GW. Learning Neural-Network-Based Turbulence Models for External Transonic Flows Using Ensemble Kalman Method[J]. AIAA JOURNAL,2023.
APA	刘毅,张鑫磊,&何国威.(2023).Learning Neural-Network-Based Turbulence Models for External Transonic Flows Using Ensemble Kalman Method.AIAA JOURNAL.
MLA	刘毅,et al."Learning Neural-Network-Based Turbulence Models for External Transonic Flows Using Ensemble Kalman Method".AIAA JOURNAL (2023).