A 2D numerical study of magnetohydrodynamic heat transfer performance within heat sink package equipped with cylindrical fins improved with helical trapezoidal wings and filled by radiative nanofluid

Cooling electronic devices using heat sinks is one of the main fields in which academics are working to develop them. This manuscript presents a novel numerical study using Comsol Multiphysics to optimize heat sink performance through the strategic integration of magnetohydrodynamic (MHD) radiative nanofluid and innovative helical trapezoidal wings on cylindrical fins. The research advances the field by systematically replacing classical cylindrical fins with those provided with cylindrical wings as a first step, and with trapezoidal shapes as a second step and subsequently introducing helical trapezoidal wings instead of the aligned shape to enhance efficiency. Comsol Multiphysics 3.4 software is used to conduct the study applying finite element method. The 2D heat sink problem is modelled as a square cavity, which is equipped with 2D longitudinal section of cylindrical fins and filled with MHD radiative nanofluid. The study examined the impact of using cylindrical wings attached laterally on the cylindrical fins. Then, the efficiency of cylindrical wings is compared with trapezoidal shape. Finally, the helical trapezoidal wings are used to enhance the heat sink efficiency. The findings reveal substantial performance improvements: with nanofluid by 42.83%, enhancement with radiation by 54.19%, with cylindrical wings by 22.38%, and a superior 10.7% efficiency increase with trapezoidal wings. In addition, using helical trapezoidal wings is the optimum for the heat sink performance by 7.26%. This work is poised to appeal to a broad readership by offering valuable insights into optimizing heat sink configurations for enhanced thermal management.