1. 西南科技大学 计算机科学与技术学院,绵阳,621010
2. 西南科大四川天府新区创新研究院,成都,610299
罗希(2000—),女,四川泸州人,研究方向:多保真气动力建模. E-mail:luoxi_59@163.com
黄俊*(1988—),男,四川自贡人,副教授,研究方向:气动智能. E-mail:huangjuncs@swust.edu.cn
纸质出版:2026
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罗希, 黄俊, 唐磊, 等. 基于GPR模型的多保真气动力建模方法[J]. 空气动力学学报, 2026, 44(3): 22−34.
Luo Xi, Huang Jun, Tang Lei, et al. Multi-fidelity aerodynamic modeling method based on GPR model[J]. 2026, 44(3): 22-34.
罗希, 黄俊, 唐磊, 等. 基于GPR模型的多保真气动力建模方法[J]. 空气动力学学报, 2026, 44(3): 22−34. DOI: 10.7638/kqdlxxb-2024.0192
Luo Xi, Huang Jun, Tang Lei, et al. Multi-fidelity aerodynamic modeling method based on GPR model[J]. 2026, 44(3): 22-34. DOI: 10.7638/kqdlxxb-2024.0192.
通过整合不同保真度的数据,多保真气动力建模能够有效提升飞行器气动特性分析的计算效率和预测精度。为了更好处理高低保真数据之间同时存在的线性和非线性的混合复杂相关性,本文在非线性自回归高斯过程(nonlinear autoregressive Gaussian process
NARGP)模型的基础上,提出了一种新的多保真高斯过程回归模型(multi-fidelity Gaussian process regressive
MFGPR)。该模型通过结合线性核函数和非线性核函数,扩展了NARGP的能力,能够同时处理多保真数据中复杂的非线性关系和线性依赖性。为验证MFGPR的有效性,本文选取两类经典解析函数进行数值测试,并与Cokriging、NARGP和MFDNN三种传统多保真方法进行了对比分析。结果表明,在处理线性相关关系时,MFGPR的预测性能与CoKriging基本一致;而在非线性相关关系建模中,MFGPR相较于其他三种方法表现出更高的预测精度,同时在建模效率方面更具优势。进一步地,本文将MFGPR应用于ONERA M6机翼的压力分布预测和NACA2414翼型的阻力系数预测问题上,验证了其在气动力建模中的应用潜力和优越性能。
Accurate aerodynamic characterization is crucial for optimizing aircraft design and enhancing flight performance. Multi-fidelity modeling approaches improve aerodynamic prediction accuracy and computational efficiency by integrating data from various fidelity levels. To better handle the complex mixed linear and nonlinear correlations coexisting between high- and low-fidelity data
this paper proposes a new multi-fidelity Gaussian process regression (MFGPR) model based on the nonlinear autoregressive Gaussian process (NARGP) framework. By integrating linear and nonlinear kernel functions
the proposed model extends the capabilities of NARGP
enabling it to simultaneously capture complex nonlinear relationships and linear dependencies within multi-fidelity data. To validate the effectiveness of the MFGPR method
two classes of classic analytical functions were selected for numerical testing
and a comparative analysis was performed against three traditional multi-fidelity methods: Cokriging
NARGP
and MFDNN. The results indicate that in handling linear correlations
the prediction performance of MFGPR is consistent with that of CoKriging. Conversely
in modeling nonlinear correlations
MFGPR demonstrates higher prediction accuracy than the other three methods
while offering a clear advantage in modeling efficiency. Furthermore
MFGPR was applied to predict the pressure distribution of the ONERA M6 wing and the drag coefficient of the NACA2414 airfoil
verifying its potential application and superior performance in aerodynamic modeling.
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