This paper focuses on addressing challenges posed by non-homogeneous unstructured grids, commonly used in Computational Fluid Dynamics (CFD). Their prevalence in CFD scenarios has motivated the exploration of innovative approaches for generating reduced-order models. The core of our approach centers on geometric deep learning, specifically the utilization of graph convolutional network (GCN). The novel Autoencoder GCN architecture enhances prediction accuracy by propagating information to distant nodes and emphasizing influential points. This architecture, with GCN layers and encoding/decoding modules, reduces dimensionality based on pressure-gradient values. The autoencoder structure improves the network capability to identify key features, contributing to a more robust and accurate predictive model. To validate the proposed methodology, we analyzed two different test cases: wing-only model and wing--body configuration. Precise reconstruction of steady-state distributed quantities within a two-dimensional parametric space underscores the reliability and versatility of the implemented approach.

该研究聚焦于解决非均匀非结构网格在计算流体力学中的挑战，通过利用图卷积网络和自编码图卷积网络结构生成降阶模型，有效提高了预测准确性和网络的能力。验证实验表明该方法在稳态分布量的精确重构方面可靠且具有多样性。

使用自编码图卷积网络预测非均匀非结构化网格中的超音速流场