標題: A parametric study on thermal performance of microchannel heat sinks with internally vertical bifurcations in laminar liquid flow
作者: Shen, Han
Wang, Chi-Chuan
Xie, Gongnan
機械工程學系
Department of Mechanical Engineering
關鍵字: Microchannel heat sink;Vertical bifurcation;Thermal resistance;Pressure drop;Optimal position
公開日期: 1-Feb-2018
摘要: The optimal position of internal vertical bifurcation integrated with a microchannel heat sink (MHS) is investigated numerically in the present research. The corresponding rectangular smooth microchannel is compared with those with internal vertical bifurcation. The optimal position along the streamwise direction for interval distances is studied in detail. The corresponding temperature fields, flow fields, pressure drop and thermal characteristics are presented through verified computational model. The numerical simulation indicates that a clear inflection point of pressure gradient may prevail with the presence of internal vertical bifurcation. It is also found that the microchannel heat sink with a small distance between the tail end of internal vertical bifurcation and the outlet of microchannel shows the best thermal performance instead of those with setting the tail end of internal bifurcation at the outlet of microchannel. The proposed optimal design of internal vertical bifurcation shows improved thermal performance without any pressure drop penalty. (C) 2017 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2017.10.025
http://hdl.handle.net/11536/144225
ISSN: 0017-9310
DOI: 10.1016/j.ijheatmasstransfer.2017.10.025
期刊: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume: 117
起始頁: 487
結束頁: 497
Appears in Collections:Articles