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@ARTICLE{Ploch:878493,
author = {Ploch, Tobias and von Lieres, Eric and Wiechert, Wolfgang
and Mitsos, Alexander and Hannemann-Tamás, Ralf},
title = {{S}imulation of differential-algebraic equation systems
with optimization criteria embedded in {M}odelica},
journal = {Computers $\&$ chemical engineering},
volume = {140},
issn = {0098-1354},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-02882},
pages = {106920 -},
year = {2020},
abstract = {Differential-algebraic equations with embedded optimization
criteria (DAEO) are a class of mathematical models for
underdetermined differential-algebraic equation (DAE)
systems with less algebraic equations than algebraic
variables. The algebraic variables may be calculated as the
solution of an embedded (non)linear program, yielding a DAEO
system. An example for DAEOs is the dynamic flux balance
analysis (DFBA) approach, where the formulation of metabolic
reaction networks leads to an underdetermined equation
system for the intracellular fluxes that are assumed to
behave optimally with respect to some cell-specific
optimization criterion.We present a toolbox that allows
formulation of DAEOs in the object-oriented Modelica
modeling language. The solution method is based on
substituting the embedded optimization problem with its
first-order Karush-Kuhn-Tucker conditions to obtain a
nonsmooth DAE system that can be simulated by a root-finding
DAE solver. One nonlinear example and two examples based on
DFBA demonstrate the performance of the toolbox.},
cin = {IBG-1 / IEK-10},
ddc = {660},
cid = {I:(DE-Juel1)IBG-1-20101118 / I:(DE-Juel1)IEK-10-20170217},
pnm = {583 - Innovative Synergisms (POF3-583)},
pid = {G:(DE-HGF)POF3-583},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000555539300008},
doi = {10.1016/j.compchemeng.2020.106920},
url = {https://juser.fz-juelich.de/record/878493},
}