Mixed magnetohydrodynamic convection in a Cu-water-nanofluid-filled ventilated square cavity using the Taguchi method: A numerical investigation and optimizationKamel Milani Shirvan, Hakan F. Öztop and Khaled Al-SalemEur. Phys. J. Plus, 132 5 (2017) 204DOI: https://doi.org/10.1140/epjp/i2017-11471-3