TY - JOUR TI - Numerical study of natural convection heat transfer in a horizontal cylindrical annular space with a porous envelope using various nanofluids: a recent of literature review AU - Abdullah, A.R. JO - Journal of Thermal Engineering PY - 2026 VL - 12 SP - 1450 EP - 1465 DO - 10.47481/jten.0043 ER -