I am trying to create a model for a poppet valve with a mass element that is held down by a spring and opens when the pressure force on the inlet side is greater than the sum of the spring force and outlet side pressure force.

I am trying to create a model for a poppet valve with a mass element that is held down by a spring and opens when the pressure force on the inlet side is greater than the sum of the spring force and outlet side pressure force.

I am trying to create a model for a poppet valve with a mass element that is held down by a spring and opens when the pressure force on the inlet side is greater than the sum of the spring force and outlet side pressure force.

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.