Transmission Heat 117 Nanofluids 40 Heat exchangers 33 Fluid dynamics 22 Thermal properties 21 Mathematical models 10 Finite element method 8 Thermodynamics 8 Computational fluid dynamics 7 Nanostructured materials 6 Solar collectors 6 Fluid mechanics 5 Fouling 5 Measurement 5 Convection 4 Fibers 4 Graphene 4 Heat pipes 4 Microfluidics 4 Nusselt number 4 Solar energy 4 Suspensions (Chemistry) 4 Thermal analysis 4 Turbulence 4 ANSYS (Computer system) 3 Convection, Natural 3 Energy conservation 3 Heat sinks (Electronics) 3 Mass transfer 3