VICON: Vision In-Context Operator Networks for Multi-Physics Fluid Dynamics Prediction

• URL: http://arxiv.org/abs/2411.16063v1
• Date: Mon, 25 Nov 2024 03:25:17 GMT
• Title: VICON: Vision In-Context Operator Networks for Multi-Physics Fluid Dynamics Prediction
• Authors: Yadi Cao, Yuxuan Liu, Liu Yang, Rose Yu, Hayden Schaeffer, Stanley Osher,
• Abstract summary: In-Context Operator Networks (ICONs) learn operators across different types of PDEs using a few-shot, in-context approach. Existing methods treat each data point as a single token, and suffer from computational inefficiency when processing dense data. We propose Vision In-Context Operator Networks (VICON), incorporating a vision transformer architecture that efficiently processes 2D functions through patch-wise operations.
• Score: 21.061630022134203
• License:
• Abstract: In-Context Operator Networks (ICONs) are models that learn operators across different types of PDEs using a few-shot, in-context approach. Although they show successful generalization to various PDEs, existing methods treat each data point as a single token, and suffer from computational inefficiency when processing dense data, limiting their application in higher spatial dimensions. In this work, we propose Vision In-Context Operator Networks (VICON), incorporating a vision transformer architecture that efficiently processes 2D functions through patch-wise operations. We evaluated our method on three fluid dynamics datasets, demonstrating both superior performance (reducing scaled $L^2$ error by $40\%$ and $61.6\%$ for two benchmark datasets for compressible flows, respectively) and computational efficiency (requiring only one-third of the inference time per frame) in long-term rollout predictions compared to the current state-of-the-art sequence-to-sequence model with fixed timestep prediction: Multiple Physics Pretraining (MPP). Compared to MPP, our method preserves the benefits of in-context operator learning, enabling flexible context formation when dealing with insufficient frame counts or varying timestep values.

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