I created a material library where each material is a CombiTable1Ds with a different “table” variable (type Real).
The first column is temperature and the following columns are different properties for ex: y[1] is thermal conductivity and y[2] is density

In the model below, I am simulating a flow that separates into two streams. This is part of a complex model that transitions the inlet flow from 0.25 kg/s to 0.002 kg/s. The simulation consists of three phases:

I’m having trouble applying a Constant source with a 3D vector to a WorldForce model. When I try to set the constant k to a 3D vector, I get the following error:

Is there a way to model pulleys and cables similar to the solutions incorporated in Maplesoft and Simscape in OpenModelica?

I am a beginner in OpenModelica and currently focusing on thermo-hydraulic systems. As I am trying to build a district heating system, the model has passed the model checkout phase, yet failed in compilation with an error “no member named ‘nominal’ in ‘struct INTEGER_ATTRIBUTE'”.

I am trying to declare a table that is correlated to another one. My goal is to declare a table with dimensions (nlines, 2) and then create another table that starts with a given value and evolves in the same manner as the first table. To achieve this, I use initial equations because I want the correlated data to be ready before the simulation starts.

I’d like to understand when and how to use the function OpenModelica.Scripting.convertPackageToLibrary. I think the documentation on this is very sparse and I am not successful trying to use it in any way.

I’ve been using Open Modelica for a few months now, primarily modeling thermo-hydraulic systems. I’ve noticed that when the ratio of the pipe’s length to the number of nodes (nnodes) in the dynamic pipe is less than 1, the model fails to initialize and displays the error “error 0xfffffffffffffff.”
Have you encountered this issue as well?

in the model below i have a convection component that is composed of 4 elements (table(4,1)). what i did is define the product and the const componant as a table of 4 elemnts but the coefficient table do not accept this definition.
is there any way to calculate the product of the constant “const” and a intrepoleted value from the coeffcient table and inserted as GC input for the convection components

Below is a model of two parallel flows exchanging heat through convection with varying boundary conditions.