摘要
对多孔介质层内同轴管式井下换热器的自然对流传热过程进行了数值模拟。通过对井下换热器分段并依次在局部采用对流相似解法对其周围遵循 Darcy定律的多孔介质层内自然对流过程进行了近似求解。得到了有关多孔介质层物性参数对井下换热器热输出影响的规律。
Natural Convection in a porous medium from a downhole coaxial heat exchanger was numerically analyzed.The variable well wall temperature was locally linearized by discretization along the well.Darcy's law and Boussinesq approximation were given in the analysis.The effects of some porous medium parameters on the heat output of Downhole Coaxial Heat Exchangers were carried out.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2000年第3期274-278,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金资助项目! (批准号 :5 9776 0 15 )
关键词
同轴管式
井下换热器
多孔介质
downhole coaxial heat exchanger,porous medium,similarity solution
