Using Large Language Models for Parametric Shape Optimization

Recent advanced large language models (LLMs) have showcased their emergent capability of in-context learning, facilitating intelligent decision-making through natural language prompts without retraining. This new machine learning paradigm has shown promise in various fields, including general contro...

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Bibliographic Details
Published in:arXiv.org 2024-12
Main Authors: Zhang, Xinxin, Xu, Zhuoqun, Zhu, Guangpu, Chien Ming Jonathan Tay, Cui, Yongdong, Khoo, Boo Cheong, Zhu, Lailai
Format: Article
Language:English
Subjects:
Airfoil profiles
Algorithms
Axisymmetric bodies
Axisymmetric flow
Benchmarks
Design engineering
Design optimization
Laminar flow
Large language models
Machine learning
Optimization
Shape optimization
Stokes flow
Three dimensional flow
Two dimensional bodies
Two dimensional flow
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Summary:Recent advanced large language models (LLMs) have showcased their emergent capability of in-context learning, facilitating intelligent decision-making through natural language prompts without retraining. This new machine learning paradigm has shown promise in various fields, including general control and optimization problems. Inspired by these advancements, we explore the potential of LLMs for a specific and essential engineering task: parametric shape optimization (PSO). We develop an optimization framework, LLM-PSO, that leverages an LLM to determine the optimal shape of parameterized engineering designs in the spirit of evolutionary strategies. Utilizing the ``Claude 3.5 Sonnet'' LLM, we evaluate LLM-PSO on two benchmark flow optimization problems, specifically aiming to identify drag-minimizing profiles for 1) a two-dimensional airfoil in laminar flow, and 2) a three-dimensional axisymmetric body in Stokes flow. In both cases, LLM-PSO successfully identifies optimal shapes in agreement with benchmark solutions. Besides, it generally converges faster than other classical optimization algorithms. Our preliminary exploration may inspire further investigations into harnessing LLMs for shape optimization and engineering design more broadly.
ISSN:2331-8422