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The heat source layout optimization using deep learning surrogate modeling

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Abstract

In practical engineering, the layout optimization technique driven by the thermal performance is faced with a severe computational burden when directly integrating the numerical analysis tool of temperature simulation into the optimization loop. To alleviate this difficulty, this paper presents a novel deep learning surrogate-assisted heat source layout optimization method. First, two sampling strategies, namely the random sampling strategy and the evolving sampling strategy, are proposed to produce diversified training data. Then, regarding mapping between the layout and the corresponding temperature field as an image-to-image regression task, the feature pyramid network (FPN), a kind of deep neural network, is trained to learn the inherent laws, which plays as a surrogate model to evaluate the thermal performance of the domain with respect to different input layouts accurately and efficiently. Finally, the neighborhood search-based layout optimization (NSLO) algorithm is proposed and combined with the FPN surrogate to solve discrete heat source layout optimization problems. A typical two-dimensional heat conduction optimization problem is investigated to demonstrate the feasibility and effectiveness of the proposed deep learning surrogate-assisted layout optimization framework.

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Notes

  1. Accurately speaking, if taking the left-bottom vertex of the square layout domain as the origin and building the Cartesian coordinate system, the coordinates of this point are (0.1, 0.0561)m.

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Funding

This work was supported in part by the National Natural Science Foundation of China under Grant Nos. 51675525 and 11725211.

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Correspondence to Wen Yao.

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The authors declare that they have no conflict of interest.

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Responsible Editor: Nestor V Queipo

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The code can be downloaded at https://github.com/idrl-lab/HSLO-DLSM.

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Chen, X., Chen, X., Zhou, W. et al. The heat source layout optimization using deep learning surrogate modeling. Struct Multidisc Optim 62, 3127–3148 (2020). https://doi.org/10.1007/s00158-020-02659-4

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  • DOI: https://doi.org/10.1007/s00158-020-02659-4

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