Heat transfer measurements on a micro disk with high rotational speed

DOI

10.2991/icsmme-15.2015.45How to use a DOI?

Keywords

Rotating Disk, Micro Disk, Heat Transfer, Transient Experiment

Abstract

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.

Copyright

© 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/).

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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  - Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SP  - 188
EP  - 191
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.45
DO  - 10.2991/icsmme-15.2015.45
ID  - Li2015/11
ER  -