Curvature-induced secondary flow in 2D depth-averaged hydro-morphodynamic models: An assessment of different approaches and key factors

•Curvature-induced secondary flow is included in a 2D hydro-morphodynamic model.•Different parameterizations and approaches are implemented and compared to each other.•A novel 2D scheme accounts for non-linear saturation mechanism typical of sharp bends.•The approaches are tested using laboratory experiments and a real-world case study.•Identification of key factors to provide guidelines for a proper modelling of secondary flow.