ライブラリ登録: Guest
CHT-04 - Advances in Computational Heat Transfer III. Proceedings of the Third International Symposium
April, 19-24, 2004, on board MS Midnatsol Norwegian Coastal Voyage

DOI: 10.1615/ICHMT.2004.CHT-04


ISBN Print: 978-1-56700-174-7

ISSN: 2578-5486

THE EFFECT OF AXIAL HEAT FLUX ON THE HEAT TRANSFER IN MICRO-CHANNELS

page 15
DOI: 10.1615/ICHMT.2004.CHT-04.630
Get accessGet access

要約

Numerical analysis was performed to evaluate the heat transfer characteristics of water flowing through triangular silicon micro-channels with hydraulic diameter of 160 μm in the range of Reynolds number Re = 3.2−64. It was shown that as the bulk water temperature, as well as the temperature of the heated wall, do not change linearly along the channel. The numerical predictions results of temperature distribution on the heated wall agree with the experimental results. The behaviour of the Nusselt number along the channel has a singular point. At this point, the difference between the temperatures on the wall and the bulk water becomes negative and the heat flux changes the sign and is directed from the fluid to the wall. The singular point shifts closer to the channel outlet with an increase of the Reynolds number. It was shown that under conditions of the present study the dissipation effects can be neglected and the heat transfer may be described by conventional Navier-Stokes and energy equations as a common basis.

Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集 価格及び購読のポリシー Begell House 連絡先 Language English 中文 Русский Português German French Spain