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Aero-Acoustic Modeling   Aero-Acoustic Modeling   Aero-Acoustic Modeling
 

Aero-Acoustic Modeling

After the significant reduction of primary noise sources, such as road noise or engine noise in cars, engineers today are faced with the complex task of reducing flow-induced noise of all sorts, in all sectors. The Aero-Acoustic Modeling solution helps engineers to accurately predict and solve aero-acoustic noise problems, ranging from fan noise in electrical appliances to turbulence-based noise in aircraft.

Aero-Acoustic Modeling uses a pragmatic approach to predict aero-acoustic noise, based on aero-acoustic analogies. It derives the equivalent aero-acoustic sources starting from the flow equations calculated with ANSYS CFX, FLUENT or STAR-CD. It then calculates the resulting radiated or scattered noise using BEM (Boundary Element Method) technology.

This efficient and cost-effective solution only requires modeling the boundary of the system, resulting in relatively small acoustic models that are easy to create, handle and check, yet providing accurate solutions to real-life problems. Powerful post-processing tools enable engineers to analyze and visualize the results for acoustic refinement.                       

Features

  • Boundary Element Method
  • Aero-Acoustic Sources: monopole, dipole and fan sources
  • Access to CFD results supporting ANSYS CFX, FLUENT and Star-CD
  • Plotting and 3D imaging: SPL, ISO 3744 Sound Power, RMS, dB weighting,  (1/3)octave
  • Transmission Loss
  • Surface absorbing material
  • Boundary Conditions: surface vibrations and pressures, acoustic sources

Benefits

  • Predict flow-induced noise for real-life applications, at a reasonable cost and with good accuracy
  • Find the cause of flow-induced noise problems very quickly, using dedicated aero-acoustic sources that enable the modeling of the contribution of each component to the overall noise
  • Predict acoustic performance accurately and minimize design risk, with robust solvers and pre/post processing tools

Solution Pack Content

  • LMS SYSNOISE Kernel
  • LMS SYSNOISE Harmonic Acoustic BEM
  • LMS SYSNOISE Aero-Acoustic Modeling

Solution Pack Options


LMS SYSNOISE options

  • CFX5 Interface
  • FLUENT Interface
  • STAR-CD Interface

LMS Virtual.Lab options

  • Desktop
  • Mesh Based Design
  • Mesh Morphing
  • Mesh Coarsening
  • CAE Interface (ABAQUS, ANSYS, I-DEAS Universal File, Nastran, PERMAS)
 
Download the LMS Virtual.Lab Acoustics Brochure



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