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arXiv 2408.08897physics.flu-dyn
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一种在物理信息深度学习训练中利用OpenFOAM数据结构的工作流程

A Workflow for Utilizing OpenFOAM Data Structure in Physics-Informed Deep Learning Training

Yijin Mao, Yuwen Zhang

AI总结:

本研究提出利用OpenFOAM数据结构构建物理信息损失函数的方法,以一维Burger方程验证流程,训练的OFormer网络可成功预测结果,为复杂工业CFD模拟的深度学习应用提供新路径。

摘要:

本研究提出了一种利用OpenFOAM的综合数据结构,将物理信息损失函数整合到深度学习模型中的新方法。借助OpenFOAM数据结构处理复杂几何形状与边界条件的强大灵活能力,本文展示了如何构建可精准嵌入物理约束的详细损失函数,有望提升神经网络在处理计算流体动力学(CFD)模拟工业级复杂几何问题时的训练效果与性能。本工作主要聚焦一维Burger方程,展示了构建初始损失、边界损失和残差损失的详细流程。尽管此处采用的计算几何相对简单,但该流程具备足够通用性,可说明其适用于更复杂的计算域。结果表明,经过训练的operator former(OFormer)神经网络能够在由OpenFOAM数据结构构成的损失约束下,成功预测模拟结果。该框架有望为利用深度学习解决复杂工业模拟难题开辟新途径,推动CFD应用的准确性与实用性取得显著提升。

英文摘要:

This study presents a novel methodology for integrating physics-informed loss functions into deep learning models using OpenFOAM's comprehensive data structures. Leveraging the robust and flexible capabilities of OpenFOAM's data structure for handling complex geometries and boundary conditions, it is demonstrated how to construct detailed loss functions that accurately embed physics constraints and potentially enhance the training and performance of neural networks in handling industrial-level complicated geometry for computational fluid dynamics (CFD) simulations. The present work primarily focuses on the 1D Burger equation to showcase the detailed procedure of constructing initial loss, boundary loss, and residual loss. While the computational geometry employed here is relatively simple, the procedure is sufficiently general to illustrate its applicability to more complex computational domains. The results show the trained operator former (OFormer) neural network can successfully predict the simulation results subject to the OpenFOAM'data structure composed loss. This framework potentially opens new avenues for using deep learning to tackle complex industrial simulation challenges, promising significant advancements in the accuracy and practicality of CFD applications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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