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Heat transfer at the liquid/solid interface, especially at the nanoscale, hasenormous importance in nanofluids. This study investigates liquid/solidinterfacial thermal resistance and structure of the formed molecular nanolayeraround a carbon-based nanoparticle. Employing non-equilibrium moleculardynamics simulation and thermal relaxation method, the nanofluid systems withdifferent nanoparticle diameters and different surface wettability wereinvestigated. Simulation results show that carbon nanotubes (CNTs) with asmaller diameter attract more value of the base fluid and lead to a reducedKapitza resistance. It was found that the thickness of the nanolayer around thenanoparticle is independent of the water/carbon interaction strength. Also, thevalue of the Kapitza resistance decreases with increasing the interactionstrength. Ultimately, a correlation was proposed for the thermal resistance ofCNT/water and graphene/water nanofluids in terms of wettability intensity ofnanoparticle surface. The proposed correlation in addition to fitting tosimulation results can cover the physical conditions of the system.

journal of molecular liquids

The effect of water/carbon interaction strength on interfacial thermal  resistance and the surrounding molecular nanolayer of CNT and graphene  nanoparticles