Abstract
In industrial fields of machine and aerospace, cooling systems consisting of channels are widely used to increase energy efficiency and prevent system overheat. In cooling channels, a reduced pressure drop, an enhanced heat transfer, and a short channel length are considered key design requirements for optimizing the total volume and weight of a system. In this work, we improved heat transfer efficiency by using milli-scale wavy structures inside the channel. By optimizing the inner structures through computational fluid dynamics analysis and Taguchi method, the Nusselt number increased by approximately 11.7% with a similar pressure drop compared with that of a normal channel for a Reynolds number of 1000.
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Recommended by Editor Haedo Jeong
Ju-Chul Lee earned his B.S. (2010) and M.S. (2014) at School of Mechanical Engineering in Pusan National University. His research topics were a vibration induced EDM process and cooling channel design. Presently, he is the CEO of a turbomachinery company.
Sang-Hu Park is a professor of Mechanical Engineering at Pusan National University, since 2007. He earned his B.S. at Pusan National University (1994), M.S. and Ph.D. in Mechanical Engineering, at Korea Advanced Institute of Science and Technology (KAIST, Korea) in 1996 and 2006, respectively. His research fields are development of 3D printing process, Nanofabrication, Mechanical design and manufacturing technology, especially for multi-scale structures.
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Lee, JC., Park, SH., Son, C. et al. Numerical study on the thermal and flow characteristics of periodically formed inner wavy structures in a cooling channel. J Mech Sci Technol 29, 3911–3917 (2015). https://doi.org/10.1007/s12206-015-0837-z
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DOI: https://doi.org/10.1007/s12206-015-0837-z