TY - JOUR
T1 - Numerical investigation of heat transfer enhancement on a porous vortex-generator applied to a block-heated channel
AU - Perng, Shiang Wuu
AU - Wu, Horng Wen
AU - Jue, Tswen Chyuan
N1 - Funding Information:
The authors gratefully acknowledge the financial support of this project by the National Council of the Republic of China , under Grant NSC 99-2622-E-168-013-CC3 .
PY - 2012/5
Y1 - 2012/5
N2 - The numerical simulation is used to obtain the unsteady laminar flow and convective heat transfer in the block-heated channel with the porous vortex-generator. The general Darcy-Brinkman-Forchheimer model is adopted for the porous vortex-generator. The parameters studies including porosity, Darcy number, width-to-height ratio of porous vortex-generator and Reynolds number have been explored on heat transfer enhancement and vortex-induced vibration in detail. The results indicate that heat transfer enhancement and vortex-induced vibration increase with increasing Reynolds number and width-to-height ratio. However, the porosity has slight influence on heat transfer enhancement and vortex-induced vibration. When Darcy number is 10 -3 or 10 -4, installing a porous vortex-generator with B/h = 1.0 improves overall heat transfer the best along heated blocks, and has a strong reduction of vortex-induced vibration.
AB - The numerical simulation is used to obtain the unsteady laminar flow and convective heat transfer in the block-heated channel with the porous vortex-generator. The general Darcy-Brinkman-Forchheimer model is adopted for the porous vortex-generator. The parameters studies including porosity, Darcy number, width-to-height ratio of porous vortex-generator and Reynolds number have been explored on heat transfer enhancement and vortex-induced vibration in detail. The results indicate that heat transfer enhancement and vortex-induced vibration increase with increasing Reynolds number and width-to-height ratio. However, the porosity has slight influence on heat transfer enhancement and vortex-induced vibration. When Darcy number is 10 -3 or 10 -4, installing a porous vortex-generator with B/h = 1.0 improves overall heat transfer the best along heated blocks, and has a strong reduction of vortex-induced vibration.
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U2 - 10.1016/j.ijheatmasstransfer.2012.02.037
DO - 10.1016/j.ijheatmasstransfer.2012.02.037
M3 - Article
AN - SCOPUS:84858722492
VL - 55
SP - 3121
EP - 3137
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
IS - 11-12
ER -