Heat transfer measurements on a micro disk with high rotational speed
Zhen Li, Yongkai Quan, Laihe Zhuang
Available Online November 2015.
- https://doi.org/10.2991/icsmme-15.2015.45How to use a DOI?
- Rotating Disk, Micro Disk, Heat Transfer, Transient Experiment
- Compared with the conventional gas turbine, the micro gas turbine has the advantages of small size, light weight, and high power density energy. The application prospect is very broad in the future. However, lots of traditional cooling designs cannot be applied to the disks at the micro scale, which makes the heat transfer of such a disk system a major problem. In this paper, a transient experimental method is proposed to investigate the local heat transfer on a rotating micro disk with a diameter of 8 mm by measuring the temperature on the disk with an infrared scanning radiometer. The heat transfer of a single rotating micro disk is compared with the theoretical analyses when the rotating Reynolds number is low. The rotation speed which is measured using a high precision acceleration sensor based on the vibration signals ranges from 20000rpm to 110000rpm. The results show that heat transfer of the micro disk is in good agreement with the theoretical analyses, which proves that the method is effective for the micro disk with high rotation speed. Moreover, the choice of the time interval in the transient method has no influence on the results.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Zhen Li AU - Yongkai Quan AU - Laihe Zhuang PY - 2015/11 DA - 2015/11 TI - Heat transfer measurements on a micro disk with high rotational speed BT - 2015 International Conference on Structural, Mechanical and Material Engineering PB - Atlantis Press SN - 2352-5401 UR - https://doi.org/10.2991/icsmme-15.2015.45 DO - https://doi.org/10.2991/icsmme-15.2015.45 ID - Li2015/11 ER -