Article | Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015 | Simulation Speed Analysis and Improvements of Modelica Models for Building Energy Simulation
Göm menyn

Title:
Simulation Speed Analysis and Improvements of Modelica Models for Building Energy Simulation
Author:
Filip Jorissen: Mechanical Engineering, KU Leuven, Leuven, Belgium / EnergyVille, Waterschei, Belgium Michael Wetter: Energy Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, CA, USA Lieve Helsen: Mechanical Engineering, KU Leuven, Leuven, Belgium / EnergyVille, Waterschei, Belgium
DOI:
10.3384/ecp1511859
Download:
Full text (pdf)
Year:
2015
Conference:
Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015
Issue:
118
Article no.:
006
Pages:
59-69
No. of pages:
11
Publication type:
Abstract and Fulltext
Published:
2015-09-18
ISBN:
978-91-7685-955-1
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


Export in BibTex, RIS or text

This paper presents an approach for speeding up Modelica models. Insight is provided into how Modelica models are solved and what determines the tool’s computational speed. Aspects such as algebraic loops, code efficiency and integrator choice are discussed. This is illustrated using simple building simulation examples and Dymola. Using this approach a medium sized office building including building envelope, heating ventilation and air conditioning (HVAC) and control strategy can be simulated at a speed five hundred times faster than real time.

Keywords: Modelica; speed; performance; buildings; solver; integrator

Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Author:
Filip Jorissen, Michael Wetter, Lieve Helsen
Title:
Simulation Speed Analysis and Improvements of Modelica Models for Building Energy Simulation
DOI:
http://dx.doi.org/10.3384/ecp1511859
References:

Ruben Baetens, Roel De Coninck, Filip Jorissen, Damien Picard, Lieve Helsen, and Dirk Saelens. Openideas - an open framework for integrated district energy simulations. In Building simulation 2015, submitted, Hyderabad, 2015.


François E. Cellier and Ernesto Kofman. Continuous System Simulation. Springer US, 2006.


Earl A. Coddington and Norman Levinson. Theory of ordinary differential equations. McGraw-Hill Book Company, Inc., New York-Toronto-London, 1955.


Dassault Systèmes. Dymola user manual, vol. 1, 2014. Ernst Hairer and Gerhard Wanner. Solving Ordinary Differential Equations II: Stiff and Differential-Algebraic Problems. Springer-Verlag Berlin Heidelberg, 2002.


Alan C. Hindmarsh. Odepack, a systematized collection of ode solvers. IMACS transactions on scientific computation, 1:55‚Äď64, 1983.


Linda R. Petzold. Description of dassl: a differential/algebraic system solver. Technical report, Sandia National Labs., Livermore, CA (USA), 1982.


Linda R. Petzold. Automatic selection of methods for solving stiff and nonstiff systems of ordinary differential equations. SIAM journal on scientific and statistical computing, 4(1): 136‚Äď148, 1983.


Damien Picard and Lieve Helsen. Advanced Hybrid Model for Borefield Heat Exchanger Performance Evaluation, an Implementation in Modelica. In 10th International Modelica Conference 2014, pages 857‚Äď866, Lund, 2014.


Elijah Polak. Optimization, Algorithms and Consistent Approximations, volume 124 of Applied Mathematical Sciences. Springer Verlag, 1997.


Michael Tiller. Introduction to Physical Modeling with Modelica. Springer US, 2001.


Michael Wetter. Fan and pump model that has a unique solution for any pressure boundary condition and control signal. In Jean Jacques Roux and Monika Woloszyn, editors, Proc. of the 13-th IBPSA Conference, pages 3505‚Äď3512, 2013. URL http://simulationresearch.lbl.gov/wetter/download/2013-IBPSA-Wetter.pdf.


MichaelWetter,Wangda Zuo, Thierry S. Nouidui, and Xiufeng Pang. Modelica buildings library. Journal of Building Performance Simulation, (4):253‚Äď270, 2014.


Michael Wetter, Marcus Fuchs, Pavel Grozman, Lieve Helsen, Filip Jorissen, Moritz Lauster, Dirk M√ľller, Christoph Nytsch-Geusen, Damien Picard, Per Sahlin, and Matthis Thorade. IEA EBC annex 60 modelica library - an international collaboration to develop a free open-source model library for buildings and community energy systems. In Building simulation 2015, submitted, Hyderabad, 2015.


Dirk Zimmer. Using Artificial States in Modeling Dynamic Systems : Turning Malpractice into Good Practice. In Proceedings of the 5th International Workshop on Equation-Based Object-Oriented Modeling Languages and Tools, pages 77‚Äď85, 2013.

Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Author:
Filip Jorissen, Michael Wetter, Lieve Helsen
Title:
Simulation Speed Analysis and Improvements of Modelica Models for Building Energy Simulation
DOI:
http://dx.doi.org/10.3384/ecp1511859
Note: the following are taken directly from CrossRef
Citations:
No citations available at the moment


Responsible for this page: Peter Berkesand
Last updated: 2017-02-21