The topic of evanescent fields/waves in any physics can be quite difficult to grasp. It is sometimes explained incorrectly, and looking at books only, it can be difficult to imagine the propagation of the sound field. In this post, I will try to take some of the mystery of the topic, and show some a...

I have talked to several people in my network recently who would like a new feature in COMSOL Multiphysics(R), so that the 'Exterior Field Calculation' node will work for structures with cyclic symmetry. That is understandable, since you can save a lot of computational time and memory by exploiting...

Here are some animations and figures from my presentation at the COMSOL Conference in Cambridge last year, showing how sound fields can be manipulated using topology optimization. You can cite [1] if you want to recreate any of these.

Criss-cross splitter:

De-multiplexor:

Mode Converter I - 01-to-02 mo...

I am happy to announce that Acculution has launched its first product. This has been in the making for a few years, and now 'A Complete Guide to - Phase Decomposition' is here (link). I have written about Phase Decomposition before (link, link), but the implementation and especially the interpretati...