Research output: Contribution to journal › Article › peer-review
Numerical study of the coefficient identification algorithm based on ensembles of adjoint problem solutions for a production-destruction model. / Penenko, Alexey V.; Mukatova, Zhadyra S.; Salimova, Akzhan B.
In: International Journal of Nonlinear Sciences and Numerical Simulation, Vol. 22, No. 5, 01.08.2021, p. 581-592.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Numerical study of the coefficient identification algorithm based on ensembles of adjoint problem solutions for a production-destruction model
AU - Penenko, Alexey V.
AU - Mukatova, Zhadyra S.
AU - Salimova, Akzhan B.
PY - 2021/8/1
Y1 - 2021/8/1
N2 - A numerical algorithm for the solution of an inverse coefficient problem for nonstationary, nonlinear production-destruction type model is proposed and tested on an example of the Lorenz'63 system. With an ensemble of adjoint problem solutions, the inverse problem is transformed into a quasi-linear matrix problem and solved with Newton-type algorithm. Two different ways of the adjoint ensemble construction are compared. In the first one, a trigonometric basis is used. In the second one in situ measurements are taken into account. Local convergence properties of the algorithm are studied numerically to find out when the use of more data can lead to the degradation of the reconstruction results.
AB - A numerical algorithm for the solution of an inverse coefficient problem for nonstationary, nonlinear production-destruction type model is proposed and tested on an example of the Lorenz'63 system. With an ensemble of adjoint problem solutions, the inverse problem is transformed into a quasi-linear matrix problem and solved with Newton-type algorithm. Two different ways of the adjoint ensemble construction are compared. In the first one, a trigonometric basis is used. In the second one in situ measurements are taken into account. Local convergence properties of the algorithm are studied numerically to find out when the use of more data can lead to the degradation of the reconstruction results.
KW - adjoint equation
KW - inverse coefficient problem
KW - local convergence
KW - Lorenz system
KW - production-destruction model
KW - sensitivity operator
UR - http://www.scopus.com/inward/record.url?scp=85093501875&partnerID=8YFLogxK
U2 - 10.1515/ijnsns-2019-0088
DO - 10.1515/ijnsns-2019-0088
M3 - Article
AN - SCOPUS:85093501875
VL - 22
SP - 581
EP - 592
JO - International Journal of Nonlinear Sciences and Numerical Simulation
JF - International Journal of Nonlinear Sciences and Numerical Simulation
SN - 1565-1339
IS - 5
ER -
ID: 25851633