MATHEMATICS, SIMULATION AND MODELLING

LMS Virtual.Lab Acoustics Rev 9

17 December 2009

LMS International

LMS has released the latest version of its acoustic simulation software, LMS Virtual.Lab Acoustics, featurin gthe latest solutions and solvers designed specifically for challenging acoustic problems. The release offers major advancements in terms of solver performance and processing excellence with substantial developments including ray tracing for high frequency acoustics and time-domain BEM, a new time-based method for acoustic problem-solving.

A core development focus has been to expand the FEM acoustic solver so that it can handle huge industrial tasks, including large noise radiation problems. This is possible thanks to PML (Perfectly Matched Layer), a technique that substantially reduces the number of required elements to solve noise radiation mega-problems more efficiently.

Other critical work has occurred in the area of LMS' BEM technology with the addition of a time-domain BEM solver, allowing acoustic engineers to do realistic simulations and gain more insight into time-related acoustic issues. In addition, the new inverse numerical acoustics solution helps determine realistic vibration sources for a better noise and vibration system optimisation.

With LMS’ ray tracing technology integrated in LMS Virtual.Lab Rev 9, acoustic engineers will be able to handle the full audible frequency range, including sound system optimisation in aircraft, train or vehicle interiors.

Enhanced for aero-acoustic engineers, LMS Virtual.Lab Aero-Acoustics Rev 9 adds a variety of new features, such as conservative mapping for more accurate predictions, CFD-based quadruples noise sources, and improved fan formulation to provide ultimately more ways to address flow-induced noise.

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