TY - JOUR
T1 - Heat transfer augmentation and vortex-induced vibration in a block-heated channel
AU - Perng, Shiang Wuu
AU - Wu, Horng Wen
AU - Jue, Tswen Chyuan
N1 - Funding Information:
The authors are gratefully thankful to the National Science Council of ROC for the financial support granted by NSC 100-2622-E-168-016-CC3 .
PY - 2014/5
Y1 - 2014/5
N2 - The finite element method is used to solve the general Darcy-Brinkman- Forchheimer model and energy equation for the heat transfer augmentation and vortex-induced vibration from the square vortex-generator wrapped by a porous sheath in the block-heated channel. The heat transfer augmentation and vortex-induced vibration have been investigated by varying Darcy number, porosity, porous sheath thickness, and Reynolds number. The results show that as Reynolds number and porous sheath thickness increase, heat transfer augmentation and vortex-induced vibration increase. Nevertheless, the porosity slightly influences the heat transfer augmentation and vortex-induced vibration. As Darcy number equals 10-4, a small vortex-generator wrapped with a porous sheath of EP/w = 0.125 best augments overall heat transfer from the heated-block surfaces with a reduction of 53.94% in vortex-induced vibration.
AB - The finite element method is used to solve the general Darcy-Brinkman- Forchheimer model and energy equation for the heat transfer augmentation and vortex-induced vibration from the square vortex-generator wrapped by a porous sheath in the block-heated channel. The heat transfer augmentation and vortex-induced vibration have been investigated by varying Darcy number, porosity, porous sheath thickness, and Reynolds number. The results show that as Reynolds number and porous sheath thickness increase, heat transfer augmentation and vortex-induced vibration increase. Nevertheless, the porosity slightly influences the heat transfer augmentation and vortex-induced vibration. As Darcy number equals 10-4, a small vortex-generator wrapped with a porous sheath of EP/w = 0.125 best augments overall heat transfer from the heated-block surfaces with a reduction of 53.94% in vortex-induced vibration.
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U2 - 10.1016/j.ijthermalsci.2013.12.004
DO - 10.1016/j.ijthermalsci.2013.12.004
M3 - Article
AN - SCOPUS:84893185618
SN - 1290-0729
VL - 79
SP - 18
EP - 33
JO - International Journal of Thermal Sciences
JF - International Journal of Thermal Sciences
ER -