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Stream Connectors - An Extension of Modelica for Device-Oriented Modeling of Convective Transport Phenomena

Franke, Rüdiger and Casella, Francesco and Otter, Martin and Sielemann, Michael and Elmqvist, Hilding and Mattson, Sven Erik and Olsson, Hans (2009) Stream Connectors - An Extension of Modelica for Device-Oriented Modeling of Convective Transport Phenomena. In: Proceedings of the 7th International Modelica Conference, pp. 108-121. Linköping University Electronic Press. 7th Modelica Conference, 20.-22. Sept. 2009, Como, Italien. ISBN 978-91-7393-513-5. ISSN 1650-3740

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Official URL: http://www.ep.liu.se/ecp/043/

Abstract

Modelica 3.0 as well as other physical modeling languages have two basic variable types to describe the interaction of physical components: “Potential” (or across) variable and “flow” (or through) variable. It is shown that with these variable types it is not possible to describe in a numerically sound way bidirectional flow of matter. Other alternatives based on signal flow oriented modeling have severe restrictions how components can be connected together. This fundamental problem is addressed in Modelica 3.1 by introducing a third type of connector variable for physical systems, called stream variable, declared with the prefix stream. This article motivates and introduces stream variables. Examples are given for their utilization in basic fluid models.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Stream Connectors - An Extension of Modelica for Device-Oriented Modeling of Convective Transport Phenomena
Authors:
AuthorsInstitution or Email of Authors
Franke, RüdigerABB AG
Casella, FrancescoPolitecnico di Milano
Otter, MartinMartin.Otter@DLR.de
Sielemann, MichaelMichael.Sielemann@DLR.de
Elmqvist, HildingDynasim
Mattson, Sven ErikDynasim
Olsson, HansDynasim
Date:2009
Journal or Publication Title:Proceedings of the 7th International Modelica Conference
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 108-121
Editors:
EditorsEmail
Casella, FrancescoUNSPECIFIED
Publisher:Linköping University Electronic Press
ISSN:1650-3740
ISBN:978-91-7393-513-5
Status:Published
Keywords:thermo-fluid, stream variable, convection, potential/flow variable, across/through variable
Event Title:7th Modelica Conference
Event Location:Como, Italien
Event Type:international Conference
Event Dates:20.-22. Sept. 2009
Organizer:The Modelica Association
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:08 Jan 2010 14:54
Last Modified:12 Dec 2013 20:51

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