大连理工大学学报Issue(2)：119-126,8.DOI:10.7511/dllgxb201502001
黏性耗散对幂律流体在多孔介质内对流换热的影响
Influence of viscous dissipation on convection heat transfer of a power-law fluid in porous medium
摘要
Abstract
Based on Darcy-Brinkman-Forchheimer flow model,the influences of different viscous dissipation on fully developed forced convection heat transfer of a power-law non-Newtonian fluid in a saturated porous medium channel were compared.The dimensionless calculation expressions of the axial velocity distribution,temperature distribution and convection heat transfer characteristics were deduced,and the viscous dissipation effects under different cases were solved numerically by employing the classical Runge-Kutta fourth-order scheme subjected to uniform heat flux. The numerical simulation results indicate that the convection heat transfer characteristics are closely related to velocity distribution,and are significantly affected by different viscous dissipation terms, namely the Darcy term,the Al-Hadhrami term and the Forchheimer term,and also are influenced by the relative magnitude of the Brinkman number Br,the Darcy number Da ,the integrated inertial parameter F and the power-law index n.关键词
黏性耗散/幂律流体/多孔介质/对流换热Key words
viscous dissipation/power-law fluid/porous medium/convection heat transfer分类
能源科技引用本文复制引用
田兴旺,徐士鸣,王平,张琨..黏性耗散对幂律流体在多孔介质内对流换热的影响[J].大连理工大学学报,2015,(2):119-126,8.基金项目
国家自然科学基金资助项目(51276029) （51276029）
