Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Conditional nodes
Posted Dec 29, 2021, 5:27 a.m. EST General Version 6.0 1 Reply
Please login with a confirmed email address before reporting spam
Hello, Under Geometry it is possible to execute nodes conditionally, depending on the value of a parameter for example. Is it possible elsewhere somehow? For example, I have a problem where I calculate the points of an interpolated function by an external code and write it to different files, for different configurations of the model. Within the comsol model, these different configurations are selected by a parameter. I would like to import the interpolated functions from these different files corresponding to the different configurations, based on the value of this parameter. Now I would do it importing all the interpolated data into different functions f1, f2, f3, etc, then sum them as f(x) = (param==1)f1(x)+param(==2)f2(x)+... but there may be a more elegant solution
Conditional nodes could also be useful elsewhere (within physics, etc) Thank you Daniel
Please login with a confirmed email address before reporting spam
Even if the above approach can work as a workaround, it is problematic in the following case: I am using my comsol model in 2 stages: 1 - run one simulation making some preliminary simulations, and export some data for the external software. 2 - After the external code has generated the interpolated function files, I run another simulation of the model, using these interpolated functions
The problem is, that initially, when I start from a clean environment, the interpolated functions are not yet calculated, these files do not exist. However, the comsol model already contains these interpolated functions, and even if these are not used actually in the stage1 simulation (because they are multiplied by a (parameter==1) factor which evaluates to zero), comsol still complains (of course) about these missing files. So I need to generate a dummy file first by hand, and than later overwrite it.
It is possible to conditionally disable some nodes, or make it more seamless somehow? It's ok as long as I am using it myself, but starts to get cumbersome when I send the model for some colleague to work on.