The Cebeci–Smith model, developed by Tuncer Cebeci and Apollo M. O. Smith in 1967, is a 0-equation eddy viscosity model used in computational fluid dynamics analysis of turbulence in boundary layer flows.
, as a function of the local boundary layer velocity profile.
The model is suitable for high-speed flows with thin attached boundary layers, typically present in aerospace applications.
Like the Baldwin-Lomax model, it is not suitable for large regions of flow separation and significant curvature or rotation.
The eddy viscosity is calculated separately for each layer and combined using: where
The inner-region eddy viscosity is given by: where with the von Karman constant
is the displacement thickness, given by and FK is the Klebanoff intermittency function given by