Numerical study of the coupled natural convection with surface radiation in a cylindrical annular enclosureMohamed Amine MEDEBBER, Abderrahmane AISSA, Belkacem OULD SAID, Noureddine RETIEL and Mohammed EL GANAOUIMATEC Web Conf., 330 (2020) 01029DOI: https://doi.org/10.1051/matecconf/202033001029