LMS multipole BEM solver speeds acoustic simulation
-- Test & Measurement World, 11/10/2008 9:53:00 AM
According to LMS, its new multipole BEM (boundary element method) solver significantly extends acoustic simulation performance, enabling higher frequency acoustic analysis on complex products without compromising simulation solving times. The fast multipole BEM solver can be found in Revision 8 of the Virtual. Lab Acoustics simulation platform.
To optimize acoustic performance in automotive and aerospace applications, users need to be able to handle increasingly higher frequencies and larger and more complex simulation models. At the same time, the simulation needs to be completed in time to impact the design process within shorter overall development cycles. The new solver provides extensions to standard BEM-based solvers to address these increased requirements.
Integrated within Virtual. Lab, simulation models comprising up to several million elements can be created, managed, solved, and post-processed. Additionally, Virtual. Lab supports efficient parallelization for the multipole BEM solver, making the calculation time nearly proportional to the number of simultaneous CPUs used.
“With the new multipole BEM technology, meshing requirements are less stringent, solving happens significantly faster whether on Linux clusters or on desktop PCs. As a result, acoustic engineers, and also non-acoustic experts, can solve tough problems and provide design directions for optimal noise and sound performances. From the sound quality of state-of-the-art flat-screen televisions, noise radiation from complex machinery, to the environmental impact of vehicle pass-by noise, the range of systems that can benefit from fast multipole BEM is vast,” commented Koen De Langhe, Product Line Manager for LMS Virtual. Lab Acoustics.
Working in close cooperation with several industry-leading customers, LMS has validated the multipole BEM solver on models with a half-million BEM elements, delivering 1/12 octave results that accurately match measurement data—within less than 3 dB. Since this powerful tool can run on 32 CPU clusters, these mega-models can be executed in a fraction of the time required using conventional solver technology.
LSM, www.lmsintl.com.
