TY - JOUR T1 - A numerical study of unsteady free convection from a sphere in a porous medium JO - International Journal of Heat and Mass Transfer PY - 1997/03/01 AU - Yan B AU - Pop I AU - Ingham DB ED - DO - DOI: 10.1016/0017-9310(96)00157-3 PB - Elsevier BV VL - 40 IS - 4 SP - 893 EP - 903 Y2 - 2024/12/22 ER -