“…Cavities of various shapes are treated with many convective fluids, going from air to nanofluids (Abu-Nada, 2015;Basak and Chamkha, 2012;Basak et al, 2009;Hossain et al, 2013;Malleswaran et al, 2013;Öztop et al, 2012;Pop et al, 2003, Rashidi andShahmohamadi, 2009). Recent studies are devoted to the aerothermal phenomena and the convective heat transfer concerning assemblies equipped with 16 leads by Baïri (2015) and 32 leads by Baïri and Haddad (2016) and Baïri (2016aBaïri ( , 2016b, with and without wire-bondings. To the authors' knowledge, only the work by Baïri (2016c) quantifies the free convective heat transfer coefficient for a QFN64b generating a power varying between 0.01 and 0.1 W, but the temperature distribution on the different parts of the assembly is not presented.…”