Thursday, March 3, 2016

Moving Mesh for Faster Optimization in CST STUDIO SUITE 2016

Comparison of traditional and moving mesh methods.
Mesh elements popping into existence contribute to "mesh noise".

We’re currently busy sending CST STUDIO SUITE 2016 DVDs and downloads off to our customers around the world. The 2016 release has both steady improvements and a number of brand new features to increase the speed, performance and functionality of the software. In our next few blog posts, we’d like to introduce some of these.

The first new feature is something called “moving mesh”. Not to be confused with the moving mesh used to simulate motors, moving mesh is a technique that can massively improve the optimization of very sensitive components such as filters. In order to simulate a filter accurately, a fine mesh is often needed in critical areas. Normally, every time the optimizer changes a parameter, the entire structure has to be remeshed. This can be a slow process, and in some cases it produces something called ‘mesh noise’, which makes it harder to identify what effect the parameter change had on the properties of the filter.

With CST STUDIO SUITE 2016, the structure does not have to be remeshed from scratch for every optimization step when using the tetrahedral mesh. Instead, the software can adjust the existing mesh by snapping it to fit the new geometry. This is not only faster than producing a brand new mesh, but can also reduce the mesh noise, allowing the optimizer to find a suitable solution in fewer steps. With moving mesh, filter tuning can be faster and more accurate.