We discuss complexity issues in time dependent adjoint evaluation. We address the question of storage complexity and redundant calculation of intermediate states in adjoint calculations for time dependent flows. Parallel in time solutions are introduced in reverse time integration together with reduced order modelling for the recovery of intermediate forward states between checkpoints.
The approach is illustrated on an identification problem from partial macroscopic variables fields observations and also in the context of shape sensitivity evaluation in fluids for the pressure and viscous drag coefficients.
Mots-clés : LBM, discrete adjoint, meta model, uncertainty, contour identification, shape optimization, parallel time reversal.
@article{SMAI-JCM_2015__1__5_0, author = {Mohammadi, Bijan}, title = {Parallel reverse time integration and reduced order models}, journal = {The SMAI Journal of computational mathematics}, pages = {5--28}, publisher = {Soci\'et\'e de Math\'ematiques Appliqu\'ees et Industrielles}, volume = {1}, year = {2015}, doi = {10.5802/smai-jcm.2}, language = {en}, url = {http://www.numdam.org/articles/10.5802/smai-jcm.2/} }
TY - JOUR AU - Mohammadi, Bijan TI - Parallel reverse time integration and reduced order models JO - The SMAI Journal of computational mathematics PY - 2015 SP - 5 EP - 28 VL - 1 PB - Société de Mathématiques Appliquées et Industrielles UR - http://www.numdam.org/articles/10.5802/smai-jcm.2/ DO - 10.5802/smai-jcm.2 LA - en ID - SMAI-JCM_2015__1__5_0 ER -
%0 Journal Article %A Mohammadi, Bijan %T Parallel reverse time integration and reduced order models %J The SMAI Journal of computational mathematics %D 2015 %P 5-28 %V 1 %I Société de Mathématiques Appliquées et Industrielles %U http://www.numdam.org/articles/10.5802/smai-jcm.2/ %R 10.5802/smai-jcm.2 %G en %F SMAI-JCM_2015__1__5_0
Mohammadi, Bijan. Parallel reverse time integration and reduced order models. The SMAI Journal of computational mathematics, Tome 1 (2015), pp. 5-28. doi : 10.5802/smai-jcm.2. http://www.numdam.org/articles/10.5802/smai-jcm.2/
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