When developing a model, I often simulate and analyse the same experiments repeatedly. When you are doing this over and over it can become really tedious to create the same plots from scratch every time. Also, when you are sharing your Dymola experiments with colleagues, it can be difficult...
Archive for category: Concepts and methods
A model that does not run is very frustrating. Troubleshooting non-model related Dymola failures can sometimes be difficult. If the model code itself is valid, then a separate issue is causing failure. In this post I will outline some typical issues we have seen through support questions here at...
Before getting involved in advanced ways of modelling we need to make sure the basics are in place. The better we set out the class in the first place, the easier our lives will be later on in the modelling. I have written blog posts in this area in...
If you haven’t experienced the benefits of using the correct tool for the job or the tremendous impact targeted training can have to rapidly increase your knowledge and exploitation of the software, a phrase that is often heard is that “software and training are expensive”. In my view, that...
This post looks at the stability of an explicit Euler solver and explicit Euler Runge Kutta solvers from the point of view of using this solver for Hardware in the Loop experiments. Why use an inline explicit Euler solver for Hardware in the Loop? Explicit Euler solvers have a...
Translation in Dymola is fundamental in the process of creating a simulation model. All components comprising of Modelica code are assembled and interpreted by Dymola, resulting in C code which is then compiled into some form of binary. It is this binary which is the end product of Dymola...
A new training course has been developed to allow students to use the Python Interface with Dymola. The interface, shipped with Dymola, is freely available to use. The half day course focuses on the basics of how to use the interface effectively in any application. Setting up the interface,...
Last week we published a blog post my colleague Hannah wrote on our library development process. The process included the use of version control to manage regular library revision backups and also merging of multiple user developments into one central repository. The purpose of this blog post though, is...
In this blog post I’m going to tell you about the approach we use here at Claytex for our Modelica library development, including some of the tools we use to make our lives easier and our libraries more robust. Some of the factors that influence our development approach are:...
When viewed from the user’s perspective, simulation models should always run faster than they currently do. There is no model on the planet that runs too fast! Non-linear systems of equations (especially ones with large numbers of equations) often present one of the biggest drags on model speed. Such...
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