S
Seongir Cheong
Researcher at Pusan National University
Publications - 15
Citations - 2122
Seongir Cheong is an academic researcher from Pusan National University. The author has contributed to research in topics: Lubrication & Nanofluid. The author has an hindex of 7, co-authored 15 publications receiving 1802 citations.
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Journal ArticleDOI
Stability and thermal conductivity characteristics of nanofluids
Yujin Hwang,Jae-Keun Lee,C.H. Lee,Yunjin Jung,Seongir Cheong,Chun-Sung Lee,B.C. Ku,Seok Pil Jang +7 more
TL;DR: In this article, various nanoparticles such as multi-walled carbon nanotube (MWCNT), fullerene, copper oxide, and silicon dioxide have been used to produce nanofluids for enhancing thermal conductivity and lubricity.
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Convective heat transfer characteristics of nanofluids under laminar and turbulent flow conditions
Doohyun Kim,Younghwan Kwon,Yonghyeon Cho,Chengguo Li,Seongir Cheong,Yujin Hwang,Jaekeun Lee,Daeseung Hong,Seongyong Moon +8 more
TL;DR: In this article, the effect of nanofluids on convective heat transfer was investigated through a circular straight tube with a constant heat flux condition in the laminar and turbulent flow regime.
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Production and dispersion stability of nanoparticles in nanofluids
Yujin Hwang,Jae-Keun Lee,Jong-Ku Lee,Young-Man Jeong,Seongir Cheong,Young-Chull Ahn,Soo Hyung Kim +6 more
TL;DR: In this article, various physical treatment techniques based on two-step method, including stirrer, ultrasonic bath and ultrasonic disruptor, were systematically tested to verify their versatility for preparing stable nanofluids.
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Understanding the Role of Nanoparticles in Nano-oil Lubrication
TL;DR: In this article, a disc-on-disc type tester was used to examine the role of fullerene nanoparticles dispersed in a mineral oil-based lubricant, and the results showed that the direct effect of nanoparticles was much more dependent on the magnitude of the applied normal load than the surface enhancement effect.
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Performance evaluation of nano-lubricants of fullerene nanoparticles in refrigeration mineral oil
TL;DR: In this paper, the authors applied nano-oil to the compressor used in a refrigerator to decrease the friction coefficient with the same or superior load-carrying capacity of the compressor.