Transition of thermally induced flow in a square cavity using Spectral Method Boutayna Laasl, Youssef Hilali, Said Mesmoudi, Omar Askour and Oussama Bourihane E3S Web Conf., 601 (2025) 00049 Published online: 16 January 2025 DOI: 10.1051/e3sconf/202560100049