Dynamic Modeling of Small Modular Nuclear Reactors using MoDSim

Richard Hale
Oak Ridge National Labs, Oak Ridge, TN USA

Sacit Cetiner
Oak Ridge National Labs, Oak Ridge, TN USA

David Fugate
Oak Ridge National Labs, Oak Ridge, TN USA

Lou Qualls
Oak Ridge National Labs, Oak Ridge, TN USA

John Batteh
Modelon, Inc., Ann Arbor, MI USA

Michael Tiller
Xogeny, Inc., Canton, MI USA

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp14096989

Ingår i: Proceedings of the 10th International Modelica Conference; March 10-12; 2014; Lund; Sweden

Linköping Electronic Conference Proceedings 96:103, s. 989-998

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Publicerad: 2014-03-10

ISBN: 978-91-7519-380-9

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


As part of the advanced small modular nuclear reactor (AdvSMR) R&D program; Oak Ridge National Laboratory (ORNL) is developing a Dynamic System Modeling Tool (MoDSim) to facilitate research and development related primarily to instrumentation and controls (I&C) studies of small modular reactors (SMRs).

The primary objective is to produce a demonstration product of a dynamic system modeling tool for SMRs. Functional Mockup Interface (FMI) has been used to allow the development of scoping models for non-Modelica users. This tool includes a web-based interface using Xogeny’s FMQ platform for model configuration with local application deployment for simulation using FMI Add-in for Excel from Modelon; this toolchain is designed to allow plug and play access for users of various skill levels. The web-based interface allows true web-based access and solutions without requiring local applications. The initial installation of this tool has been tested on a liquid-metal small modular reactor (ALMR) concept modeled using Dymola and exported via FMI. This tool allows simulation to be performed within Excel without expertise in the native simulation language (Modelica) or solver (Dymola). This toolchain fulfills the Department of energy (DOE) project scope goal of developing a tool “in a common and familiar environment to support a range of research activities requiring dynamic behavior simulation; modeling tools with easily re-configurable modules that reduce data input to typically available system level plant data”.


Nuclear reactors; thermofluid systems; Dymola; Excel; web-based simulations; Advanced Liquid Metal Reactor


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[2] ORNL/TM-2013/426, “SMR Dynamic System Modeling Tool Update: September 2013”, September 2013.

[3] GEFR-00793, “PRISM Preliminary Safety Information Document”, UC-87Ta, December 1987.

[4] Dassault Systemes, “Dymola 2013 FD01”, 2012.

[5] Modelon, “FMI Add-in for Excel”, Version 1.2.1, 2013. http://www.modelon.com/products/fmi-addin-for-excel/

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