TY - JOUR
T1 - Constructal parallel-flow and counterflow microchannel heat sinks with bifurcations
AU - Zhang, Fengli
AU - Sundén, Bengt
AU - Zhang, Weihong
AU - Xie, Gongnan
N1 - Publisher Copyright:
© 2015 Taylor and Francis Group, LLC.
PY - 2015/11/17
Y1 - 2015/11/17
N2 - Based on the Constructal Theory, parallel-flow and counterflow microchannels heat sinks with bifurcations are put forward to manage the temperature nonuniformity and further reduce the temperature of microchannel heat sinks bottom plates. Several models with different lengths of bifurcations are designed, and the corresponding laminar fluid flow and heat transfer of all models have been investigated through numerical simulations. The pressure, velocity, temperature distributions, and averaged Nusselt numbers are analyzed in details, and then the overall thermal resistances and overall thermal performance are compared. The results show that the thermal performance of counterflow microchannel heat sinks is better than that of parallel-flow heat sinks for the same geometry, and bifurcation can improve the thermal performance for all cases. It is suggested that a proper design of the length of bifurcation counterflow microchannel can be employed to improve the overall thermal performance of microchannel heat sinks. The study complements and extends previous works.
AB - Based on the Constructal Theory, parallel-flow and counterflow microchannels heat sinks with bifurcations are put forward to manage the temperature nonuniformity and further reduce the temperature of microchannel heat sinks bottom plates. Several models with different lengths of bifurcations are designed, and the corresponding laminar fluid flow and heat transfer of all models have been investigated through numerical simulations. The pressure, velocity, temperature distributions, and averaged Nusselt numbers are analyzed in details, and then the overall thermal resistances and overall thermal performance are compared. The results show that the thermal performance of counterflow microchannel heat sinks is better than that of parallel-flow heat sinks for the same geometry, and bifurcation can improve the thermal performance for all cases. It is suggested that a proper design of the length of bifurcation counterflow microchannel can be employed to improve the overall thermal performance of microchannel heat sinks. The study complements and extends previous works.
UR - http://www.scopus.com/inward/record.url?scp=84932136064&partnerID=8YFLogxK
U2 - 10.1080/10407782.2015.1023148
DO - 10.1080/10407782.2015.1023148
M3 - 文章
AN - SCOPUS:84932136064
SN - 1040-7782
VL - 68
SP - 1087
EP - 1105
JO - Numerical Heat Transfer; Part A: Applications
JF - Numerical Heat Transfer; Part A: Applications
IS - 10
ER -