Written by: Maura Gallarotti – Fluids Modelling Engineer In this blog post we will go through the available options in Dymola to build user-defined input dialogs. In Dymola the user can edit the parameter dialogs adding tabs, groups, alternative forms of input fields such as combo boxes, radio buttons and...
Written by: Sas Harrison – Systems Engineer Introduction This article will explain some ways in which text files can be read into Dymola models. The article is intended for those seeking that specific information (go directly to summary of functions) and any student, or professional as yet new to Modelica,...
This blog post demonstrates the concept of using a Functional Mock-up Unit (FMU) for external model calibration. The example used is a combustion model from the Claytex Engines Library with appropriate boundaries to enable its calibration through many engine operating points. Figure 1 shows the combustion model...
Options to customise the Dymola environment. If you click on Edit -> Options, a number of options are available to customise the working environment. Manual formatting: the user can choose to use their own formatting or an automatic formatting. Automatic formatting can be useful for consistency and to avoid...
Whilst we are developing models in Dymola we might like to be able to save all of our progress using keyboard shortcuts which do not disrupt our work flow. Up to and including Dymola 2015 FD01, the shortcut for “Save All” is Alt + F + A. This will...
Often in modelling, we want to identify which parts of the model are causing the simulation to run slow. For example, we might notice that the simulation is getting stuck at a particular time or points during a simulation. State variables and related variables which fluctuate at a high...
A “Real-Time” function exists in the Claytex Library to ease the simulation of a model in real-time. This function allows to set number flags that are available in Dymola for inline integration and to improve performance for real-time simulation. Figure 1: Real-time function from the Claytex library Inline integration is...
There is the ability within Dymola to create a function to load a customised list of libraries, rather than manually loading each library. Using this approach, you can create multiple functions to load the sets of libraries required in different projects. These functions can then be made easily accessible...
Many engineering problems require the results of one simulation to influence the inputs into a second simulation; in effect, a preliminary simulation is used to calibrate a second simulation. This could be done manually, but it makes more sense to automate the process wherever possible. With a little knowledge...
The intention of this article is to provide additional comment and examples, relating to the article about the eigenvalue function, and above all the meaning of its results. Having provided simple instructions on the function, this article is aimed at undergraduates and those interested in revising the subject with...
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