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I totally agree with you. It is quite an evolving field, and it is difficult to keep up to date with research and best practice.
From a methodology point of view, there has been some interested development with the so-called meshless models (I think that Autodesk Falcon is one of them) - but I have not used any and find it difficult to make the difference between claims and reality.
This being considered, simple models using combination of empirical/physical test/models can be far more accurate than very advanced models... It is often about validation... validation... validation... and experience...
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