Unified Error Transport Equation Solver for Solution Verification on Unstructured Grids

摘要

Error quantification is a subject of importance for any Computational Fluid Dynamics (CFD) simulation. Only when errors due to the computational mesh, iterative convergence, and code usage are bounded can errors due to physical modeling be properly examined. The current work extends an existing error prediction method, based on the solution of Error Transport Equations (ETE), to a unified framework suitable for use with simulations conducted using cell-centered or node-centered finite volume unstructured Navier-Stokes solvers. Support for the CGNS standard has been implemented to permit use of the method by a broad spectrum of potential flow solvers. Applications are presented demonstrating the solver's utility as a practical and effective solution verification tool for a variety of turbulence models and CFD codes.