Comparison of Mesh Adaptation Using the Adjoint Methodology and Truncation Error Estimates

François Fraysse, Eusebio Valero, Jorge Ponsín
2012 AIAA Journal  
Mesh adaptation based on error estimation has become a key technique to improve the accuracy of computationalfluid-dynamics computations. The adjoint-based approach for error estimation is one of the most promising techniques for computational-fluid-dynamics applications. Nevertheless, the level of implementation of this technique in the aeronautical industrial environment is still low because it is a computationally expensive method. In the present investigation, a new mesh refinement method
more » ... refinement method based on estimation of truncation error is presented in the context of finite-volume discretization. The T estimation method uses auxiliary coarser meshes to estimate the local truncation error, which can be used for driving an adaptation algorithm. The method is demonstrated in the context of two-dimensional NACA0012 and three-dimensional ONERA M6 wing inviscid flows, and the results are compared against the adjoint-based approach and physical sensors based on features of the flow field.
doi:10.2514/1.j051450 fatcat:4apo4kj5djcfvcpjhxsxnpnz5e