#022: Acoustic Demultiplexor
Today we will have a look at an acoustic design that I have been wanting to do for a long time; the Acoustic Demultiplexor. The acoustic Demultiplexor is a device that can split an input into several outputs based on the frequency content of the input signal. Here, it has three different geometrical outputs, and each output is assigned a certain frequency for which the output intensity is to be maximized. This way, we achieve an "acoustic crossover" of sorts, as opposed to th
#013: Shape Optimization vs Analytical Solution
Before setting up any numerical calculation, you should always consider if you can get similar insight with simpler means, such as analytical expressions, lumped circuits, or similar techniques. In today's blog I look at how the result of a shape optimization simulation could actually have been investigated much easier with an analytical expression. I have several interests within the field of vibroacoustics, which hopefully shows in the different blog posts on my page. But s
#011: Reviewing BEM in COMSOL Multiphysics
COMSOL has just announced their newest 5.3a version with the acoustic boundary element method (BEM) implemented, much to many an engineer's delight. And this is truly very good news for those of us who work in the field of acoustics. I have earlier looked at, and tested, the prerelease version, and reported my findings to COMSOL, and in the following blog post the same tests have been carried out again using the final release. I hope you will get a better understanding of the
#010: Image Data in COMSOL Multiphysics
This is just a very short post showing some examples on how you can use image data in your COMSOL Multiphysics simulations. Image data for material data: The image data was used for manipulating the stiffness of the design domain, and this shows up in the stresses. Image data for domain creation: A slightly more complicated procedure is needed for the above; a picture has been used for making new domains. This way you can e.g. evaluate a discrete 0-1 design from a topology op
