A new approach for computationally efficient estimation of stability factors for parametric partial differential equations is presented. The general parametric bilinear form of the problem is approximated by two affinely parametrized bilinear forms at different levels of accuracy (after an empirical interpolation procedure). The successive constraint method is applied on the coarse level to obtain a lower bound for the stability factors, and this bound is extended to the fine level by adding a proper correction term. Because the approximate problems are affine, an efficient offline/online computational scheme can be developed for the certified solution (error bounds and stability factors) of the parametric equations considered. We experiment with different correction terms suited for a posteriori error estimation of the reduced basis solution of elliptic coercive and noncoercive problems.
Mots-clés : parametric model reduction, a posteriori error estimation, stability factors, coercivity constant, inf-sup condition, parametrized PDEs, reduced basis method, successive constraint method, empirical interpolation
@article{M2AN_2012__46_6_1555_0, author = {Lassila, Toni and Manzoni, Andrea and Rozza, Gianluigi}, title = {On the approximation of stability factors for general parametrized partial differential equations with a two-level affine decomposition}, journal = {ESAIM: Mathematical Modelling and Numerical Analysis }, pages = {1555--1576}, publisher = {EDP-Sciences}, volume = {46}, number = {6}, year = {2012}, doi = {10.1051/m2an/2012016}, mrnumber = {2996340}, zbl = {1276.65069}, language = {en}, url = {http://www.numdam.org/articles/10.1051/m2an/2012016/} }
TY - JOUR AU - Lassila, Toni AU - Manzoni, Andrea AU - Rozza, Gianluigi TI - On the approximation of stability factors for general parametrized partial differential equations with a two-level affine decomposition JO - ESAIM: Mathematical Modelling and Numerical Analysis PY - 2012 SP - 1555 EP - 1576 VL - 46 IS - 6 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/m2an/2012016/ DO - 10.1051/m2an/2012016 LA - en ID - M2AN_2012__46_6_1555_0 ER -
%0 Journal Article %A Lassila, Toni %A Manzoni, Andrea %A Rozza, Gianluigi %T On the approximation of stability factors for general parametrized partial differential equations with a two-level affine decomposition %J ESAIM: Mathematical Modelling and Numerical Analysis %D 2012 %P 1555-1576 %V 46 %N 6 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/m2an/2012016/ %R 10.1051/m2an/2012016 %G en %F M2AN_2012__46_6_1555_0
Lassila, Toni; Manzoni, Andrea; Rozza, Gianluigi. On the approximation of stability factors for general parametrized partial differential equations with a two-level affine decomposition. ESAIM: Mathematical Modelling and Numerical Analysis , Tome 46 (2012) no. 6, pp. 1555-1576. doi : 10.1051/m2an/2012016. http://www.numdam.org/articles/10.1051/m2an/2012016/
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