Numerical simulation of opposing mixed convection in differentially heated square enclosure with partition

In the present study, opposing mixed convection in a differentially heated partitioned enclosure is investigated. The Richardson number (Ri) has been varied to simulate mixed convection (Ri=1) and forced convection dominated flow (Ri=0.1). Comparison is also made with natural convection in order to establish clarity in understanding the physics. The phenomenon inside the enclosure with centrally located partitions and offset partitions are also analyzed through isotherm pattern and streamline pattern and shielding effect of such partitions has been critically examined. It is found that when height of centrally located partition increases beyond a certain height of 0.3H, the heat transfer in case of opposing mixed convection is found to be more than that of natural convection for a partitioned enclosure.