【摘要】 采用Forchheimer Brinkman扩展模型数值研究了部分充满多孔介质的封闭矩形空腔内的自然对流,系统地考察了加热强度、渗透率、多孔区高度、导热系数比以及高宽比等参数对腔内流动与传热的影响,给出了相应的速度场与温度场,并得到了平均Nusselt数随时间的变化规律。更多还原

【Abstract】 The present paper decribes numerical analytical results of natural convection in a closed cavity partially filled with porous medium by means of Forchheimer-Brinkman model. The effects of heated rate,permeability,height of porous region,heat conduction coefficients and aspect ratio on flow and heat transfar in the cavity are systematically investigated. Velocity and temperature fields in the cavity are given and dependence of average Nu on time is obtained.更多还原