The behavior of the Darcy–Forchheimer flow a double-hybrid nanofluid toward Riga plate with radiation and heat source/sink effects is investigated. two different hybrid nanofluids, (Al2O3 Ag) TiO2) base fluid (H2O), are considered. governing models accompanying boundary constraints reshaped into non-linear ODEs by applying symmetry variables. numerically computed using Bvp4c in Matlab ND solver...