Thermal convection in rotating anisotropic bidispersive porous layers

•A mathematical model for fluid dynamics in a rotating bidispersive porous medium, horizontally isotropic, is introduced.•Linear and nonlinear stability analyses for thermal convection are performed.•The coincidence between linear instability and non-linear stability thresholds has been proved.•The influence of a uniform rotation on the onset of convection has been examined. Linear and nonlinear stability analyses for thermal convection in a rotating bidispersive porous medium, horizontally isotropic, is performed. Since the coincidence between linear instability and non-linear stability thresholds has been proved, the linear theory captures completely the physics of the problem at stake.