Research output: Contribution to journal › Article › peer-review
Source Identification for the Smoluchowski Equation Using an Ensemble of Adjoint Equation Solutions. / Penenko, A. V.; Salimova, A. B.
In: Numerical Analysis and Applications, Vol. 13, No. 2, 01.06.2020, p. 152-164.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Source Identification for the Smoluchowski Equation Using an Ensemble of Adjoint Equation Solutions
AU - Penenko, A. V.
AU - Salimova, A. B.
N1 - Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6/1
Y1 - 2020/6/1
N2 - A source identification algorithm for systems of nonlinear ordinarydifferential equations of production-destruction type is applied to aninverse problem for a discretized Smoluchowski equation. An unknownsource function is estimated by time series of measurements of particleconcentrations of a specific size. Based on an ensemble of adjointequation solutions, a sensitivity operator is constructed that relatesperturbations of the sought-for model parameters with perturbations ofthe measured values. This reduces the inverse problem to a family ofquasilinear operator equations. To solve the equations, an algorithm ofthe Newton–Kantorovich type with r-pseudoinversematrices is used. The efficiency and properties of the algorithm arestudied numerically.
AB - A source identification algorithm for systems of nonlinear ordinarydifferential equations of production-destruction type is applied to aninverse problem for a discretized Smoluchowski equation. An unknownsource function is estimated by time series of measurements of particleconcentrations of a specific size. Based on an ensemble of adjointequation solutions, a sensitivity operator is constructed that relatesperturbations of the sought-for model parameters with perturbations ofthe measured values. This reduces the inverse problem to a family ofquasilinear operator equations. To solve the equations, an algorithm ofthe Newton–Kantorovich type with r-pseudoinversematrices is used. The efficiency and properties of the algorithm arestudied numerically.
KW - adjoint equations
KW - inverse source problem
KW - Newton--Kantorovich method
KW - sensitivity operator
KW - Smoluchowski equation
UR - http://www.scopus.com/inward/record.url?scp=85086900065&partnerID=8YFLogxK
U2 - 10.1134/S1995423920020068
DO - 10.1134/S1995423920020068
M3 - Article
AN - SCOPUS:85086900065
VL - 13
SP - 152
EP - 164
JO - Numerical Analysis and Applications
JF - Numerical Analysis and Applications
SN - 1995-4239
IS - 2
ER -
ID: 24615497