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Heat pipes are heat transfer devices that carry heat from one point to another efficiently. The thermal conductivity and heat transfer performance of the heat pipe can be increased by integrating nanofluids, making them appropriate for applications such as electronics cooling, spacecraft thermal management, and heat recovery systems. The suggested work is being carried out for the approximate solution of tri-hybrid nanofluid (copper (Cu), silver (Ag) and graphene oxide (GO)) flow between two horizontal coaxial cylinders. The inner cylinder is rotating with constant velocity and the outer cylinder is fixed. Moreover, the flow is under the influence of magnetic field. The system of governing partial differential equations is converted into a set of non-linear ordinary differential equations by incorporating the suitable similarity transformation and then solved numerically by employing Runga-Kutta 4th order technique. Response surface methodology (RSM) is also incorporated in order to optimize the heat transfer rate by the various combinations of the physical parameters involved in the study. The study revealed that the temperature of the nanofluid increased by raising the strength of the Reynolds number and melting parameter. From optimization technique RSM it came to know that the heat transfer rate reached its peak value when the strength of the Reynolds number and concentration of the nanoparticle of the fluid is higher than normal.
Raza et al. (Tue,) studied this question.