[Mohinder Suresh]

Hello, everybody,
i would like to address a topic which i think has a high relevance for the cummunity, namely the definition of monitor points/surfaces during a transient calculation. When it comes to LES simulations, you don't want to store the output of the whole domain at each time step in order to perform transient analysis. Therefore it is possible to define monitor points. In my case, however, these are 100k+ points, which are arranged in several planes. I have followed different ways to do this as efficiently as possible:
1: import monitor surface points via TUI -> this is possible up to a number of 2000 points, but then it gets exponentially slower and is therefore not an option.
2. import stl surfaces and imprint them via /surface/imprint-surface/... -> this would destroy the structured arrangement of my data, which I could live with but even this approach is so slow that it is absolutely impractical.
3. the last solution is of course an implementation using UDF. I found a function for this (https://www.eureka.im/701.html), but it is from 2003 and I wonder if this is really the most efficient way to define such an output, especially since it is completely trivial in CFX using user interfaces? (I have not been able to get this solution to work! -> SIGSEV error!)
I hope that people who understand more of the material can help me and above all I hope that this is really just a mistake on my part, because I think that this would really be a weakness of the pre processing of fluent.