Page 3 - Winter 2010

VNOISE
Easily integrated into your NVH and CAD platform, with reduced costs for training and licenses, and with outstanding support. VNoise is the right solution for any acoustic simulation need, from small consulting companies interested in simple radiation analyses, up to large companies performing complex vibro-acoustic and aero-acoustic analyses with strong time and resource constraints.
The right solution for cost effective noise simulations
Figure 1: Random vibroacoustics analysis of a Solar array. Comparison of nodal accelerations, VNoise versus experiment (Courtesy of Dutch Space).
Flow Noise
The new Flow-Noise module permits to evaluate aero-acoustically generated noise starting from a simple and cost effective CFD steady RANS analysis. Application
include Duct Noise, Whistle
Noise, HVAC, and
many other.
Figure 2: SPL comparison between VNoise and experiments for the flow-noise produced by a 45° valve in a circular duct (Courtesy of Faurecia R&D)
VNoise Main Features
Cavity modes and coupled structural acoustic eigenvectors.
Frequency response ( FEM, direct and indirect BEM).
Fully coupled FEMBEM analyses.
Multi and mixeddomain with complex sound velocity and density.
Fully coupled structural acoustics.
Propagation in non uniform flows.
Random vibroacoustic analysis.
Extremely fast iterative solver.
Interface with FEM/CAE platforms.
Aeroacoustic radiation analysis with Ffowcs Williams Hawkings solver.
Flow Noise from RANS analysis.
TL, soundpower, Intensity.
Contribution vectors.
Mesh coarsening and refinement. Responsive technical support.
If you are interested in understanding what advantages VNoise can offer to increase accuracy and reliability of your acoustic simulations, while reducing costs and modelling efforts, please visit our web
site an join our next web training class or contact
us and we will be pleased to arrange a customized demo and
any evaluation test.
STS. Scientific and Technical Software Via Dalmazia 30, 21100 Varese (VA), ITALY Tel: (+39) 0332333871 , Fax: (+39) 0332341113 http://www.stssoft.com info@stsweb.it
Customers Testimonial
The software VNoise is implemented in the development process of various exhaust systems within Faurecia Tech Centers.
STS has provided a responsive and high-quality support during the tool integration into our development workflow, and has demonstrated its capacity to accompany Faurecia in providing a radiated noise tool dedicated to exhaust system components (muffler, resonator, manifold...). Predictions are accurate and the software is quite easy to handle for a NVH engineer..
Cousin Etienne R&D Tech Center, Bavans (FRANCE)