TY - JOUR T1 - Transient Natural Convection in a Horizontal Concentric Annulus Filled With a Porous Medium JO - Journal of Heat Transfer PY - 1992/11/01 AU - Pop I AU - Ingham DB AU - Cheng P ED - DO - DOI: 10.1115/1.2911911 PB - ASME International VL - 114 IS - 4 SP - 990 EP - 997 Y2 - 2025/06/27 ER -