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Steady-state initialization of object-oriented thermo-fluid models for homotopy methods

Casella, Francesco and Sielemann, Michael and Savoldelli, Luca (2011) Steady-state initialization of object-oriented thermo-fluid models for homotopy methods. In: Proceedings of 8th International Modelica Conference. 8th International Modelica Conference, 20.-22. Mrz 2011, Dresden.

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Abstract

The steady-state initialization of large object-oriented thermo-hydraulic networks is a difficult problem, because of the sensitivity of the convergence to the initial guesses of the iteration variables. This paper proposes an approach to this problem based on homotopy transforamtion, detailing specific criteria for model simplifications in this physical domain. The approach is successfully demonstrated on large power plant test cases, having several hundreds of iteration variables.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Steady-state initialization of object-oriented thermo-fluid models for homotopy methods
Authors:
AuthorsInstitution or Email of Authors
Casella, FrancescoPolitecnico di Milano
Sielemann, MichaelMichael.Sielemann@DLR.de
Savoldelli, LucaPolitecnico di Milano
Date:2011
Journal or Publication Title:Proceedings of 8th International Modelica Conference
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:thermo-hydraulic systems, power plants, steady-state initialization problems.
Event Title:8th International Modelica Conference
Event Location:Dresden
Event Type:international Conference
Event Dates:20.-22. Mrz 2011
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems & Cabin
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics > System Dynamics and Control (former Control Design Engineering)
Deposited By: Monika Klauer
Deposited On:15 Dec 2011 17:36
Last Modified:12 Dec 2013 21:30

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