Enhanced natural convection and entropy generation in a porous crown cavity filled with copper nanoparticles under a horizontal magnetic fieldZeeshan Badshah, Kejia Pan, Murad Ali Shah, Noor Zeb Khan, Ijaz Ahmad and Kamal ShahEur. Phys. J. Plus, 139 7 (2024) 608DOI: https://doi.org/10.1140/epjp/s13360-024-05392-9