Analysis On The Convective Heat Transfer Process And Performance Evaluation Of Triply Periodic Minimal Surface (TPMS) Based On Diamond,Gyroid And Iwp

With the continuous progress of various industries such as electronic chips,aerospace,chemical,construction,and air conditioning,their equipment is developing towards miniaturization and lightweight,which puts higher requirements on the heat dissipation capacity of heat sinks.Traditional heat dissipation structures represented by fins are gradually unable to meet the heat dissipation needs of these devices.Three Period Minimal Surface(TPMS)is a type of biomimetic topology structure that exhibits great potential for development in the field of convective heat transfer,and is expected to provide better cooling solutions for current and future high heat release devices.However,there are still insufficient studies on the convective heat transfer characteristics of TPMS structures.This article studies the convective heat transfer performance of three typical TPMS structures,Gyroid,Diamond,and Iwp,based on existing theories,and introduces traditional fin structures as a reference.The mechanism of heat transfer enhancement was elucidated through a combination of experiments and numerical simulations,and experimental research was conducted.The main work and conclusions of this article are as follows:(1)Three TPMS structures(Gyroid,Diamond,Iwp)were modeled using 3D modeling software such as rhino and solidworks.(2)In the numerical simulation results in this paper,when the Reynolds number is in the range of 166-940,compared with the fin model,the Nusselt number of TPMS Diamond increases by 8-194%,the TPMS Gyroid increases by 5.5-148%,and the TPMS Iwp increases by 6.6-43%.(3)Among the three TPMS structures,TPMS-Diamond has the best convective heat transfer performance,which can be attributed to its geometric structure without "through holes",resulting in stronger fluid disturbance ability and enhanced heat transfer.(4)The accuracy of numerical simulation work was verified through design experiments,and experimental correlations for the four structures within a certain flow range were obtained through experimental data,providing reference for subsequent engineering applications.