物理学报Issue(21)：201-206,6.DOI:10.7498/aps.63.214401
三维有序排列多孔介质对流换热的数值研究
Numerical study of convection heat transfer in ordered three-dimensional p orous media
摘要
Abstract
Saturated fluid convective heat transfer in ordered three-dimensional porous media has been investigated numerically using a CFD software. Spherical particles with diameters dp equal to respectively 14, 9.4, 7 mm have orderly arrangements constituting the porous media skeleton. There is a copper plate of constant heat flux density above the porous skeleton. The distribution of temperature and local convective heat transfer coefficient in the channel, as well as factors affecting the convective heat transfer are investigated by the method of fluid-solid coupling. Results show that the thickness of the thermal penetration and the thermal boundary layer increase in the flow direction, and decrease with the flow rate. When the thermal conductivity of the skeleton is relatively high, the convective heat transfer increases slightly with decreasing particle diameter. The convective heat transfer coefficient decreases with the increase in mass concentration of polyacrylamide solution, because the viscous dissipation weakens convection heat transfer.关键词
多孔介质/温度场/局部对流换热系数/数值模拟Key words
porous media/temperature field/local convective heat transfer coefficient/numerical simulation引用本文复制引用
王平,尹玉真,沈胜强..三维有序排列多孔介质对流换热的数值研究[J].物理学报,2014,(21):201-206,6.基金项目
国家自然科学基金(批准号:51276029)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant No.51276029) （批准号:51276029）
