Thermally developed radiated flow of single and multiple carbon nanotubes (SWCNTs-MWCNTs) with variable thermal conductivity

Owing to improved thermal performances, the carbon nanotubes present multiple applications in improving the heat transfer phenomenon, energy storage systems, semi-conductors, nanocomposites etc. The objective of current communications is to investigates the enhancement of heat transfer due to rotating flow of carbon nanotubes with applications of Darcy-Forchheimer effects. The properties of carbon nanotubes are studied with help of single walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs). The thermo-physical properties of both SWCNT and MWCNT are presented. Water liquid is used to incorporates the base fluid properties. The evaluation of heat transfer is exhibited in presence of thermal radiation. Furthermore, thermal conductivity of fluid is assumed to be variable. The problem is simplified with help of dimensionless variables. The numerical computations of current flow model are performed with help of shooting scheme. The results are described graphically with relevant physical structures. It has been observed that heat transfer for both SWCNT and MWCNT enhances by increasing the rotation parameter and nanoparticles volume fraction. Current results justify applications in the thermal management devices, solar thermal systems, heat exchangers, thermoelectric devices, cooling processes, automotive applications etc.