A numerical study of the effect of the magnetic field on turbulent fluid flow, heat transfer and entropy generation of hybrid nanofluid in a trapezoidal enclosureAlireza Aghaei, Hossein Khorasanizadeh and Ghanbar Ali SheikhzadehEur. Phys. J. Plus, 134 6 (2019) 310DOI: https://doi.org/10.1140/epjp/i2019-12681-3