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Modelica 2017 - XRG at Modelica Conference in Prague

XRG Simulation will present the most recent product developments and research results at the upcoming 12th International Modelica Conference in Prag from May, 15th to 17th. You are invited to visit XRG's vendor session and our talks.

Vendor session 9 : XRG Score - A new Excel-based tool for FMU simulations

In this session on May 15th at 18:30 (Room Tycho-Kepler) the brandnew XRG SCORE Excel Add-In is presented and demonstrated. SCORE is a summary of useful Excel extensions for users of the Dymola Software (product of Dassault Systemes) or users of Functional Mockup Units (FMU).

With SCORE the user has the option to write scripts out of Excel sheets for serial simulation, run simultaneously simulations (multithreading) and read the results into Excel for post-processing. The SCORE software reads the results and fills predefined Excel sheets with formulas and diagrams.

Talk 1: "Extended Modelica Model for Heat Transfer of Two-Phase Flows in Pipes Considering Various Flow Patterns"

On May 16th at 18:05 (Session 7B Thermodynamic Systems) Timm Hoppe is going to talk about a new heat transfer model for 2ph-flow in XRG's FluidDissipation Library.

Talk 2: "Applying the Power Plant Library ClaRa for Control Optimisation"

On May 17th at 14:55 (Session C11 Power Plants & Energy Sys) Lasse Nielsen will talk about the comprehensive Power Plant Library ClaRa and its use for Control Optimisation.

We are looking forward to meeting you on the Modelica Conference 2017!


Release TransiEnt 1.0 - Coupled energy networks with a high share of renewable energy

Renewable energy sources rebuild our world. How do we have to design future energy networks and how stable will our energy supply be?

In a multidisciplinary project of Hamburg University of Technology in cooperation with XRG, the energy supply, conversion and consumption for electricity, natural gas and heat was analyzed for Hamburg's complex energy grid. For systematic calculation of transient energy flows, a very comprehensive model library was created to solve this exciting task. These Modelica model libraries are now available free of charge and can be used for transient (dynamic) simulation of coupled energy networks.

Site for download:


Announcement of CFDSystems Modelica Library 1.0

XRG proudly announces the new CFDSystems Modelica library available for Dymola 2018 FD01. This new high-tech product will dramatically reduce your engineering costs and will further increase the quality of your products. Both is achieved by:


  •    fast coarse grid CFD simulations on conventional PCs
  •   seemless connections to Modelica system models in one simulation tool
  •   finer resolution of flow domains with Navier-Stokes-based equations
  •   insight into Modelica code of each model


The library components were already contained since 2015 in XRG’s HumanComfort Library and will still be available in this product.

The models have been successfully applied to automotive, building and aeronautic applications.

If you are interested in further information, please do not hesitate to contact us:




Second ClaRa User Meeting at January, 9th 2017 in Hamburg

XRG Simulation GmbH and TLK Thermo GmbH invite all ClaRa users to join us at the second user meeting in Hamburg. The meeting will allow you to meet the ClaRa developers and chat with other users. We will introduce the new features of the upcoming ClaRa release 1.2.0 and discuss ideas for the future development of the library. Additionally, users will get the opportunity to present their work and to discuss challenges and individual solutions for the work with the ClaRa library. You are interested in participating or in talking about your ClaRa experience? Just feedback to

The release is free of charge and can be downloaded under More information about the research project DYNSTART can be found here:



Release Modelica-Library Hydronics 2.1.0

The new release of our Hydronics Library 2.1.0 is now compatible with the Modelica.Fluid components of the Modelica Standard Library 3.2.2. Additionally, the correlations for the computation of pressure differences and heat transfer coefficients of the latest release of the FluidDissipation 1.1.8 with its several improvements are integrated.