Numerical Predictions of Heat Transfer Performance in Dimple/Protrusion Channels with the Working Fluid of Supercritical Carbon Dioxide at High Re
- 10.2991/icectt-15.2015.5How to use a DOI?
- Dimple; Protrusion; Supercritical carbon dioxide; Heat transfer
The RANS method and turbulence model are adopted to numerically investigate the turbulent flow and heat transfer performance of dimple/protrusion arranged in rectangular channel with the working fluid of supercritical carbon dioxide and air. Investigated is 90000. The distribution, the flow resistance coefficient and the comprehensive thermal performance were obtained. According to the results, it is obtained that the of supercritical carbon dioxide cases is about 2.3 times higher than the values of air cases at the of 90000. The of supercritical carbon dioxide cases is close to the values of air cases. The of supercritical carbon dioxide cases is about 2.4 times higher than the values of air cases. The conclusion can be obtained that supercritical carbon dioxide has significant heat transfer performance while not increasing the flow resistance at high . Furthermore, the supercritical carbon dioxide dimple case possesses the best comprehensive thermal performance following the supercritical carbon dioxide protrusion case.
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Qi Jing AU - Qiuwan Du AU - Li Xiong AU - Di Zhang PY - 2015/11 DA - 2015/11 TI - Numerical Predictions of Heat Transfer Performance in Dimple/Protrusion Channels with the Working Fluid of Supercritical Carbon Dioxide at High Re BT - Proceedings of the 2015 International Conference on Electromechanical Control Technology and Transportation PB - Atlantis Press SP - 23 EP - 26 SN - 2352-5401 UR - https://doi.org/10.2991/icectt-15.2015.5 DO - 10.2991/icectt-15.2015.5 ID - Jing2015/11 ER -