Aérodynamique Instationnaire Et Méthode Adjointe
Author | : Anca Belme |
Publisher | : |
Total Pages | : 212 |
Release | : 2011 |
ISBN-10 | : OCLC:800508872 |
ISBN-13 | : |
Rating | : 4/5 (72 Downloads) |
Book excerpt: In this thesis, we first focused on error estimates for unsteady problems. We have contributed to both a posteriori and a priori error estimators for unsteady inviscid problems and viscous unsteady problems. For the first one, we have been interested on linearized methods for reducing dissipation errors. Regarding the a priori errors, a new estimator is proposed with application to viscous compressible flows. These a priori estimators have been employed for goal-oriented anisotropic mesh adaptation problems, for both Euler and laminar Navier-Stokes flows, in a joint work with Gamma3 team we have developed a method to derive an optimal mesh to observe/improve a given output functional in an unsteady context. The weights of the interpolation error are adjoint states in this case. A new global fixed-point algorithm is proposed herein order to converge the couple mesh/solution. We have applied this algorithm for blast wave problems and acoustics, for both 2D and 3D cases.