AirfoilMNIST: A Large-Scale Dataset based on Two-Dimensional RANS Simulations of Airfoils

AirfoilMNIST is a dataset of two-dimensional, RANS-based flow fields for NACA 4- and 5-series airfoils. The dataset consists of around 148,000 simulations for Mach numbers up to 0.6 and angles of attack ranging from −5 ≤ α ≤ 15. The dataset is divided into five subsets: - AirfoilMNIST-raw: Raw CFD output from the NacaFOAM pipeline. Size: 3.5TB. - AirfoilMNIST: Preprocessed version of AirfoilMNIST-raw subset. Size: 500GB. - AirfoilMNIST-incompressible: Subset of AirfoilMNIST with samples with M &lt; 0.3. Total samples: 78,010. Size: 50GB.- BluffBodyExtension-raw: Raw CFD output from the BluffFOAM pipeline with 11,760 samples. Size: 125GB. - BluffBodyExtension: Preprocessed version of BluffBodyExtension-raw subset. Size: 12GB Preprocessed subsets have been interpolated onto a 256x256 uniform grid. For every combination of geometry and angle of attack, one random velocity is put in the test split.AirfoilMNIST是一款面向NACA 4系列与5系列翼型的、基于雷诺平均纳维-斯托克斯方程（Reynolds-Averaged Navier-Stokes，RANS）的二维流场数据集。该数据集包含约148000组模拟结果，对应马赫数上限为0.6，攻角取值范围为−5 ≤ α ≤ 15。 该数据集划分为五个子集： - AirfoilMNIST-raw：源自NacaFOAM流程的原始计算流体动力学（Computational Fluid Dynamics，CFD）输出结果，存储容量为3.5TB。 - AirfoilMNIST：AirfoilMNIST-raw子集的预处理版本，存储容量为500GB。 - AirfoilMNIST-incompressible：AirfoilMNIST中马赫数M < 0.3的样本子集，总样本量为78010，存储容量为50GB。 - BluffBodyExtension-raw：源自BluffFOAM流程的原始CFD输出结果，包含11760组样本，存储容量为125GB。 - BluffBodyExtension：BluffBodyExtension-raw子集的预处理版本，存储容量为12GB。 所有预处理子集均已被插值至256×256的均匀网格。针对每一组几何构型与攻角的组合，将随机选取一个样本划入测试集。