arXiv:2511.21474cs.CEcs.AI2025-11被引 5

构建3D跨音速翼型数据集,验证神经代理模型在未知构型下的高效设计潜力。

Going with the Speed of Sound: Pushing Neural Surrogates into Highly-turbulent Transonic Regimes

  • 构建包含约3万组三维跨音速流场的仿真数据集,涵盖不同几何与来流条件。
  • AB-UPT模型在未见翼型上仍能准确预测升阻帕累托前沿,表现优于其他模型。
  • 成果助力快速气动优化,适合航空航天设计与数据驱动方法研究者使用。

神经代理模型在汽车气动中的广泛应用得益于DrivAerML和DrivAerNet++等数据集,但主要集中在具有大尾流的钝体流动。将其拓展至航空航天,尤其是跨音速领域,仍面临可压缩流高度非线性及三维效应(如翼尖涡)的挑战。现有航空航天数据集多聚焦二维机翼,忽略关键三维现象。为此,我们提出一个跨音速三维机翼的CFD仿真新数据集,包含约30,000个样本的体积与表面场数据,具备独特几何与来流条件,可计算升力与阻力系数,为数据驱动气动优化提供基础。我们在该数据集上评估了Transolver和AB-UPT等先进神经代理模型,重点关注其在几何与来流变化下的分布外(OOD)泛化能力。结果显示,AB-UPT在跨音速流场中表现优异,即使面对未见过的机翼构型,仍能生成物理解释一致的升阻帕累托前沿。结果表明,AB-UPT可有效逼近未知几何的升阻帕累托前沿,展现出作为快速气动设计探索工具的巨大潜力。为促进后续研究,我们已将数据集开源至https://huggingface.co/datasets/EmmiAI/Emmi-Wing。

原文摘要 · Abstract (English)

The widespread use of neural surrogates in automotive aerodynamics, enabled by datasets such as DrivAerML and DrivAerNet++, has primarily focused on bluff-body flows with large wakes. Extending these methods to aerospace, particularly in the transonic regime, remains challenging due to the high level of non-linearity of compressible flows and 3D effects such as wingtip vortices. Existing aerospace datasets predominantly focus on 2D airfoils, neglecting these critical 3D phenomena. To address this gap, we present a new dataset of CFD simulations for 3D wings in the transonic regime. The dataset comprises volumetric and surface-level fields for around $30,000$ samples with unique geometry and inflow conditions. This allows computation of lift and drag coefficients, providing a foundation for data-driven aerodynamic optimization of the drag-lift Pareto front. We evaluate several state-of-the-art neural surrogates on our dataset, including Transolver and AB-UPT, focusing on their out-of-distribution (OOD) generalization over geometry and inflow variations. AB-UPT demonstrates strong performance for transonic flowfields and reproduces physically consistent drag-lift Pareto fronts even for unseen wing configurations. Our results demonstrate that AB-UPT can approximate drag-lift Pareto fronts for unseen geometries, highlighting its potential as an efficient and effective tool for rapid aerodynamic design exploration. To facilitate future research, we open-source our dataset at https://huggingface.co/datasets/EmmiAI/Emmi-Wing.

气动优化神经代理跨音速三维流场

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