Natural convection investigation under influence of internal bodies within a nanofluid-filled square cavityAhmed Dhafer Abdulsahib, Atheer Saad Hashim, Khaled Al-Farhany, Ammar Abdulkadhim and Fateh Mebarek-OudinaEur. Phys. J. Spec. Top., 231 13-14 (2022) 2605-2621DOI: https://doi.org/10.1140/epjs/s11734-022-00584-9