CFD Transition Modeling: Blending Classical Methods with Modern Tools (Invited)

摘要

There is a distinct need for laminar-turbulent transition modeling capabilities in computational fluid dynamics (CFD) solvers. Classical methods for transition prediction, including local-correlation methods and linear-stability theory, are based on quantities normally associated with integral boundary-layer methods rather than considered in CFD calculations. Nevertheless, it is desirable to model transition using the same methods used to model turbulence so as to be compatible with available solution methods and parallelization. Several such transition models are described, including the amplification factor transport model that incorporates the well-known linear stability theory (e~N) method into a CFD-compatible model. Selected results of this model are included along with a brief discussion on the future outlook.