Abstract
In topology optimization of the microchannel heat sink, the minimum width of flow channels are constrained by the mesh size. To reduce the constraint of finite element mesh on the optimized structure, this paper proposes a mesh adaptive strategy which consists of finer ground mesh and coarser adaptive mesh for the heat sink design. The nodes of adaptive mesh are selected from ground mesh based on the structure of current iteration. The physical fields are solved on adaptive mesh, and design variables are updated on ground mesh. Besides, hyperparameters are introduced to control the adaptive degree, and their influence on optimized results is analysed in detail. Numerical experiments with simplified two-layer thermal-fluid model and parametric level set method show that the developed method outperforms traditional uniform mesh and is able to save large amounts of computing resources.
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Funding
This work was supported by High tech ship research project of ministry of industry and information technology JJT(2019)(No. 357 of MIT) and Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (GML2019ZD0502).
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The proposed method is built on the exisiting mesh adaptation scheme and simplified two-layer heat sink topology optimization method, the combination of which has been fully expounded in this work. On behalf of all authors, the corresponding author states that the results presented in this paper can be reproduced by the implementation details provided. The authors wish to withhold the codes of finite element models for commercialization purposes. The MATLAB code for optimization is acquired from its author Svanberg. Thus, only an example of proposed method written in MATLAB is provided.
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Zhang, T., Yang, X. & Wang, X. Mesh adaptive-based parametric level set method for the design of heat sink based on two-layer thermal-fluid system. Struct Multidisc Optim 67, 80 (2024). https://doi.org/10.1007/s00158-024-03790-2
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DOI: https://doi.org/10.1007/s00158-024-03790-2