FlowVision can provide simulations for aero-acoustical problems by working with a third party acoustical simulation software. In an aero-acoustical problem, the sound (acoustic) pressure is generated by the turbulence or the interaction between air and a structure. Majority of commercial acoustical simulation software (including LMS Virtual.Lab Acoustics) simulates the aero-acoustical problems based on the Lighthill’s Aero-Acoustic Analogy.
The aero-acoustic analogy is based on the assumption that the acoustic field has no strong coupling effect to the air (medium) flow, which means the acoustic pressure is not strong enough to affect the air flow. The sound generation is simulated by fluctuations occulting in the flow field and then propagates within the flow. In such cases, FlowVision can provide a one-way coupling simulation with acoustical simulation software to conduct fast aero-acoustical simulations.
FlowVision is the best solution for most aero -acoustical problems, especially when moving objects are involved. In many engineering problems, there is usually at least one moving machine part, such as a fan or turbine blade that interacts with the flow surrounding. The moving body simulation technology can provide realistic simulations for flow-structure interactions, and the SGGR (Sub-Grid Geometry Resolution) technology can further reduce the time required for flow field simulations.
As a result; FlowVision can provide fast, accurate and realistic simulations for flow field allowing acoustical calculations in the presence of complex body movements.