International Journal

Numerical analysis on thermo-fluid–structural performance of graded lattice channels produced by metal additive manufacturing
Year of publication 2021
Title of paper Numerical analysis on thermo-fluid–structural performance of graded lattice channels produced by metal additive manufacturing
Author Sungho Yun, DongChan Lee, Dong Soo Jang, Minwoo Lee, Yongchan Kim
Publication in journal Applied Thermal Engineering
Publication date 5 July 2021
Volume & other data Volume 193, 117024
Abstract The graded lattice channel is a novel design for improving heat transfer and structural stability by effectively varying the volume fraction for various applications. However, the combined analysis of the thermo-fluid and structural performances of the graded lattice channel is very limited in the literature. In this study, the thermo-fluid–structural performances of the increase-type graded (IG), V-type graded (VG), and W-type graded (WG) lattice channels were investigated using a thermo-fluid–structural interaction one-way coupled model and compared with that of a uniform lattice channel. The results indicated that the increase-type graded lattice channel had the lowest standard deviation of the working surface temperature owing to an increase in its local convective heat transfer. The V-type lattice channel exhibited the lowest thermo-fluid performance owing to the highest difference in the volume fraction between unit cells. The W-type graded lattice channel exhibited the lowest maximum stress because of its highest support structure. Furthermore, under various inlet velocity and heat flux conditions, the W-type graded lattice channel exhibited superior thermo-fluid–structural performance owing to its high thermo-fluid performance and low stress ratio, when compared with those of other lattice channels. Overall, the graded lattice channels can be recommended as a cooling channel of high-performance electronic devices and manufacturing tools.
Keywords Graded lattice channel, Thermal performance, Structural performance, Metal additive manufacturing, Fluid-structural interaction
issn Number 13594311
Status of publication
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