Fluid aspiration and heat transfer in tilted open heat sinks containing adiabatic obstacles
Cadi Ayyad University, BP 2390, Marrakesh, Morocco
2 Laboratory of Energy Engineering, Materials and Systems, National School of Applied Sciences of Agadir, Ibn Zohr University, Agadir, Morocco
Accepted: 20 September 2022
Published online: 25 October 2022
Natural convection induced in an inclined heat sink assimilated to an open square cavity provided with a thin adiabatic partition is studied numerically using the multi-relaxation time (MRT) scheme of the lattice Boltzmann method (LBM). The cavity is isothermally heated through a wall facing the opening. The parameters governing the problem are the cavity inclination (varied from 0 to 60°), the Rayleigh number (varied from to ) and the location of the partition (four positions). Combined effects of the cavity tilt and partition position on the flow structure, heat transfer and aspirated volume flow rate are investigated. The results obtained show that the combination of inclination and position of the partition may be a good way for passive control of heat transfer and ventilation in the heat sink. Useful correlations are derived to make easily reachable the results of the present study.
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