Abstract
Due to its excellent performance and high design freedom, the lattice structure has shown excellent capabilities and considerable potential in aerospace and other fields. This paper proposes a method to map the biometric model to the lattice structure. Taking leaf veins as bionic objects, they are used to generate a bionic design with a gradient lattice structure to improve the performance of a heat exchanger. In order to achieve the above goals, this article also proposes a leaf vein model and a mapping method that combine the leaf vein model with the lattice structure. A series of transient thermal finite element simulations was conducted to evaluate and compare the heat dissipation performance of different designs. The analysis results show that the combination of the bionic design and the lattice structure effectively improves the heat dissipation performance of the lattice structure heat exchanger. The results indicate that the application of bionic design in lattice structure design has feasibility and predictable potential.
Highlights
Because of their excellent mechanical properties and multifunctionality, lattice structures have received widespread attention in both academia and industry
To further improve the heat dissipation efficiency of the lattice structure infill heat exchanger, this paper developed a leaf vein-inspired bionic design method for heat exchanger infilled with graded lattice structure
In order to realize the bionic design, we propose a model to describe the vein model and a mapping method to generate graded lattice structures according to the leaf vein models
Summary
Because of their excellent mechanical properties and multifunctionality, lattice structures have received widespread attention in both academia and industry. Studies on the thermal performance [2], effective thermal conductivity [3,4], as well as applications [5,6] of the lattice materials have been performed based on the theory of metal foam [7,8,9,10]. Wang et al [11] developed a lattice Boltzmann method-based computational model to predict the effective thermal conductivity of lattice structures. Based on the principle of thermodynamics, Deng and Wang [15] developed an efficient method to calculate the effective thermal conductivity of the X-type lattice structure. Yan et al [17] applied the X-type lattice core material to the design of the disc brake system to improve its cooling performance
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