The use of phase change materials (PCMs) is an efficient passive technique for thermal
energy management. However, its low thermal conductivity presents significant
technological challenges. Several methods have thus been employed to improve the
thermal performance of a latent heat thermal energy storage (LHTES) unit. Here, the melting
and heat transfer characteristics for the multi-walled carbon nanotube (MWCNT) enhanced
PCM (n-octadecane) inside a square duct with a vertical undulated wall has been examined …