• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2024, Vol. 60 ›› Issue (13): 92-121.doi: 10.3901/JME.2024.13.092

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Topology Optimization Design of Complex Heat-flow Coupling Structures

LI Baotong1,2, LIU Ce1,2, HONG Jun1,2, LIU Qingfang3, SHI Meng2, LI Kaitai3   

  1. 1. Key Laboratory of Education Ministry for Modern Design & Rotor-Bearing System, Xi'an Jiaotong University, Xi'an 710049;
    2. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049;
    3. School of Mathematics and Statistics, Xi'an Jiaotong University, Xi'an 710049
  • Received:2023-10-10 Revised:2024-03-01 Online:2024-07-05 Published:2024-08-24

Abstract: With the rapid upgrading and development of high-end equipment, there is an urgent need for high-performance heat-flow coupling structure optimization design for complex service conditions. However, the lack of efficient means of solving heat-flow coupling field and the insufficient capability of designing heat-flow coupling structures considering complex boundary conditions are still the two key issues that restrict the speed and quality of equipment upgrading. Therefore, a new meshless particle method is proposed, non-uniform rational B-splines (NURBS) based particle hydrodynamics (NBPH), which achieves the alleviation of the strong coupling between the quality of the numerical solution of partial differential equations and the degree of discretization of the analytical domain through the configuration of real and pseudo particles and the interpolation based on the NURBS basis functions, which improves the computational efficiency of the algorithm. Secondly, the proposed NBPH method is combined with the SIMP method to build a new topology optimization framework based on meshless method, NBPH-Topology Optimization (TO), for optimization and design of complex heat flow scenarios. The particle flow resistance field is constructed based on the voxel distribution to realize the correlation between the flow field and the structural field, and the continuous evolution of the structural topology is guided by solving the continuous Adjoint Sensitivity. To verify the effectiveness and robustness of the NBPH-TO framework, two typical heat dissipation scenarios, liquid-cooled and air-cooled, are investigated, and the optimization design and experimental validation are completed. The results show that the study provides a feasible solution and an effective numerical tool for topology optimization design of the complex heat-flow coupling structures.

Key words: NBPH, SIMP, meshless method, topology optimization, heat flow coupling

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