TY - JOUR
TI - Buoyancy heat transfer in staggered dividing square enclosure
AU - Terekhov Viktor I
AU - Chichindaev Alexander V
AU - Ekaid Ali L
JN - Thermal Science
PY - 2011
VL - 15
IS - 2
SP - 409
EP - 422
PT - Article
AB - This study represents the results of numerical simulation of fluid motion and  free-convective heat transfer in a square cavity with partitions mounted on  the lower (heated) and upper (cooled) walls. The height of partitions and  their heat conductivity were varied Kr = 2 ÷ 8000 together with Rayleigh  number Ra = 103 ÷ 106, which corresponded to the laminar flow. It is assumed  that vertical walls of the cavity are adiabatic, and its horizontal walls are  kept at constant, but different temperatures. The numerical solution based on  transformation of determining equations by the method of finite differences  was achieved. The obtained results show that the surface-average heat  transfer coefficient decreases with a rise of partition height due to the  suppression of convection. Also the results show that with an increase in  heat conductivity coefficient of partitions, the Nusselt number increases  significantly. In addition, it was found that when the value of relative heat  conductivity coefficient changes by four orders, Nu number for the highest  partitions changes by the factor of 1.5 - 2 only and integral heat transfer  through the whole interlayer increases with development of the heat  exchanging area.