Numerical investigation of heat transfer and flow resistance in tubes with flat plate, blunt edge, and airfoil turbulatorsM. S. Abdollahi, A. AliAkbari, Y. Ma and R. MohhebiEur. Phys. J. Plus, 140 6 (2025) 594DOI: https://doi.org/10.1140/epjp/s13360-025-06539-y