Modeling turbulent recirculating flows by finite-volume methods - current status and future directions

An overview of some of the influential issues contributing to the calculation of complex turbulent flows using the finite-volume technique is provided. The status of some recent developments and speculations on future directions are described, in areas such as: discretization of convection, including bounding schemes, and solution algorithms with emphasis on maintaining spatial and intervariate coupling, geometric flexibility and turbulence modeling. The survey indicates that current developments point toward the use of quadratic approximations, multilevel (or multigrid) acceleration (for steady problems), and second-moment (Reynold stress/flux) closures within the framework of nonorthogonal grids in which a Cartesian velocity decomposition is adopted. 216 refs