Actran 14 Includes New VibroAcoustics and AeroAcoustics Capabilities

MSC Software announced the release of Actran 14, an acoustics simulation software used by engineers to predict and reduce noise as well as optimize sound in products.

The new release leverages Discontinuous Galerkin Method (DGM) technology, a time-domain solver that can be distributed into a large number of CPUs, each with limited RAM requirements.

Adaptive Perfectly Matched Layer (APML) is an extension to the existing PML technology. It allows engineers to model acoustic radiation within the finite element approach more easily and efficiently. Based on the analyzed frequencies, different PML meshes are created automatically by the new integrated APML volume mesher.

The update also includes enriched vibroacoustics. Engineers have access to more structure element types and complex formulations for porous materials, a broader scope for modeling of visco-thermal acoustic loss, and more possibilities of dynamic loading from turbulent boundary layers at various flow conditions.

In the past, fan noise was addressed by coupling transient compressible CFD with Actran. However, the simulation process was affordable only to those customers that had heavy CFD computational resources, the company says. With the new technology embedded into Actran 14, tonal fan noise prediction is possible with less expensive CFD computations, based on Multiple Reference Frame (MRF) or Non-Linear Harmonic (NLH) CFD techniques.

The existing NVH trimmed body modeling technologies have been reworked to allow engineers to model more complex trim components with more flexible installation in the vehicle models that run with fewer computational resources. With that improvement, on a typical industrial trimmed body model, customers have a reported gain of up to five times in terms of CPU time.

For more information, visit MSC Software.

Sources: Press materials received from the company and additional information gleaned from the company’s website.