Article,
Multi-objective inverse design of finned heat sink system with physics-informed neural networks
Affiliations
- [1] Sun Yat-sen University [NORA names: China; Asia, East];
- [2] Guangdong Engineering Center for Petrochemical Energy Conservation, The Key Laboratory of Low-carbon Chemistry Energy Conservation of Guangdong Province, Guangzhou 510275, China [NORA names: China; Asia, East];
- [3] Hong Kong Polytechnic University [NORA names: China; Asia, East];
- [4] Aalborg University [NORA names: AAU Aalborg University; University; Denmark; Europe, EU; Nordic; OECD]
Abstract
This study proposes a new inverse design method that utilizes a physics-informed neural network (PINN) to parameterize the geometric and operating inputs, enabling the identification of optimal heat sink designs by starting with the desired objectives and working backward. A specialized hybrid PINN is designed to accurately approximate the governing equations of the conjugate heat transfer processes. On this basis, a surrogate model derived from the hybrid PINN is constructed and integrated with multi-objective optimization and decision-making algorithms. The results of an example finned heat sink system are presented, showcasing the accelerated search for Pareto-optimal designs. The proposed method nearly halved the search time to approximately 113.9 h in comparison with the traditional methods. Moreover, three representative scenarios—high-performance design, equilibrium design, and low-cost design —were compared to visualize the real-time changes in the multiphysics field, facilitating improved physical inspection and understanding of the optimal designs.