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In this paper, turbulent mixed convection in a ventilated square cavity exposed to a cooling of the blocks is studied numerically. The cavity walls were kept adiabatic except the right vertical wall which was equipped with three blocks dissipating the heat at a constant temperature. The commercial Ansys Fluent code is used and governing equations were established and discretized by the finite volume method. The standard k-ε model is considered for the turbulence modeling and SIMPLE algorithm is used for the pressure – velocity coupling. The objective of the present study is to characterize the best outlet location that provides the greatest effective cooling in the blocks by maximizing the heat-elimination rate and decreasing the total temperature in the cavity. Obtained results showed that the variations of the air outlet position in the cavity and the Richardson number have major effects on the stream function and heat transfer.

In the present study, a numerical investigate the transport mechanism of laminar mixed convection in a vented enclosure. The walls of the cavity were kept adiabatic except the right vertical wall which was equipped with three fins dissipating the heat at a constant temperature. The equations of considered phenomenon were established and discretized by the finite difference method. The sweeping method line-by-line and the Thomas Algorithm (TDMA) were used for the resolution of the system of discretized equations. The results obtained showed that both the variations of the Prandtl and Richardson number have important effects on the flow structure and on the heat transfer.

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The principal function of a continuous casting mold is to receive the liquid steel and ensure its cooling in order to permit the formation of a solidified and sufficiently resistant skin. This is the phase of primary cooling. The efficiency of this process depends on several parameters, such as the casting speed, the temperature exchange between the walls of the mold and the thin crust of the slab, as well as the conicity of continuous casting mold. The latter has been the subject of this work, which consists in investigation of the influence of the conicity of mold on the variation of the temperature field, and friction, generated during lowering of the slab. The numerical simulation was carried out using Fluent 6.0 code. The obtained curves reflect changes of the factors mentioned above as a functions of the conicity.