Mixed convection flow and heat transfer in a double lid- driven cavity containing a heated square block in the centerAsma Ouahouah, Seddik Kherroubi, Abderrahmane Bourada, Nabila Labsi and Youb Khaled BenkahlaMATEC Web Conf., 330 (2020) 01010DOI: https://doi.org/10.1051/matecconf/202033001010