The FWH Solver is a VNoise module that permit to consider aero-acoustic sources
in VNoise analyses. Typical applications include:
The FWH Solver is based on an advanced integration technique of the Ffowcs
Williams Hawkings equation. Typically the FWH solver require some aerodynamic
data computed by a CFD code, and that characterize the aero-acoustic source.
Sound radiated by blades, fans, rotors.
Sound generated by unsteady pressure fluctuations on solid surfaces
Sound radiated by turbulence.
The FWH Solver then permit to integrate the FWH equation over a suitable
surface that enclose the source. Both permeable and non permeable surfaces are
available enabling a more easy choice of the integration surface, and a more
easy coupling with CFD codes.
Typical example of the integration surface are:
Surface of rotating blades and fans.
Physical surfaces on which aerodynamic loads are applied.
Fictitious surfaces that enclose an aeroacoustic source.
Both fixed and rotating integration surfaces can be used. The results provided
by the FWH Solver are the acoustic pressures generated by the aerodynamic sound
in any desired microphone position.
FWH Solver is a component of the VNoise integrated aeroacoustic suite, and
when coupled with the FlowNoise module and the FEM/BEM solver constitute a
powerful tool that can be applied in a wide range of physical