Abstract This article investigates natural convection with double-diffusive properties numerically in a vertical bi-layered square enclosure. The cavity has two parts: one part is an isotropic and homogeneous porous along the wall. and an adjacent part is an aqueous fluid. Adiabatic. https://safeersappliancers.shop/product-category/neff-v6320x2gb-7kg-wash-4kg-dry-integrated-washer-dryer/