TY - GEN
T1 - NUMERICAL STUDY OF FLOW AND HEAT TRANSFER CHARACTERISTICS OF DIFFERENT DISTRIBUTED CORRUGATED TUBE BUNDLES
AU - Shao, Wei
AU - Li, Bing Xi
AU - Wu, Hao
AU - Zhang, Ya Ning
AU - Xu, Zhi
N1 - Publisher Copyright:
© 2014, Begell House Inc. All rights reserved.
PY - 2014
Y1 - 2014
N2 - Flow and heat transfer characteristics of malposed and traditional corrugated tube bundles are investigated in this study. The velocity, pressure drop, dimensionless turbulent kinetic energy of vapor in the malposed and traditional tube bundles are detailed. The Nusselt number, frictional resistance and overall heat transfer performance of the malposed and traditional tube bundles with a Re range of 15000 to 55000 are also studied. The results obtained from this study show that when the Re ranges from 15000 to 55000, the velocity, pressure drop, dimensionless turbulent kinetic energy are more uniform in the malposed tube bundles than those in the traditional tube bundles. The local Nusselt numbers in the axial and circumferential directions are more uniform in the malposed tube bundles than those in the traditional tube bundles, whereas the local ΔP decreases more obviously along the traditional tube bundles and the fluctuation is larger. The malposed tube bundles and the traditional tube bundles have similar Nusselt numbers whereas the malposed corrugated tube bundles have smaller frictional resistances, making the malposed corrugated tube bundles have a better overall heat transfer performance of 7-24%.
AB - Flow and heat transfer characteristics of malposed and traditional corrugated tube bundles are investigated in this study. The velocity, pressure drop, dimensionless turbulent kinetic energy of vapor in the malposed and traditional tube bundles are detailed. The Nusselt number, frictional resistance and overall heat transfer performance of the malposed and traditional tube bundles with a Re range of 15000 to 55000 are also studied. The results obtained from this study show that when the Re ranges from 15000 to 55000, the velocity, pressure drop, dimensionless turbulent kinetic energy are more uniform in the malposed tube bundles than those in the traditional tube bundles. The local Nusselt numbers in the axial and circumferential directions are more uniform in the malposed tube bundles than those in the traditional tube bundles, whereas the local ΔP decreases more obviously along the traditional tube bundles and the fluctuation is larger. The malposed tube bundles and the traditional tube bundles have similar Nusselt numbers whereas the malposed corrugated tube bundles have smaller frictional resistances, making the malposed corrugated tube bundles have a better overall heat transfer performance of 7-24%.
KW - corrugated tube
KW - heat transfer enhancement
KW - malposed tube bundle
KW - triangular central subchannel
UR - https://www.scopus.com/pages/publications/105043409081
U2 - 10.1615/IHTC15.hte.009424
DO - 10.1615/IHTC15.hte.009424
M3 - 会议稿件
AN - SCOPUS:105043409081
SN - 9781567004212
T3 - International Heat Transfer Conference
SP - 4007
EP - 4020
BT - International Heat Transfer Conference 15
PB - Begell House Inc.
T2 - 15th International Heat Transfer Conference, 2014
Y2 - 10 August 2014 through 15 August 2014
ER -