Numerical analysis on thermo-fluid-structural performance of graded lattice channels produced by metal additive manufacturing
- Authors
- Yun, Sungho; Lee, DongChan; Jang, Dong Soo; Lee, Minwoo; Kim, Yongchan
- Issue Date
- 5-7월-2021
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Fluid-structural interaction; Graded lattice channel; Metal additive manufacturing; Structural performance; Thermal performance
- Citation
- APPLIED THERMAL ENGINEERING, v.193
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED THERMAL ENGINEERING
- Volume
- 193
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/137155
- DOI
- 10.1016/j.applthermaleng.2021.117024
- ISSN
- 1359-4311
- 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.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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