CFD Simulation: Aeroacoustics
The generation of noise, e.g. in components, machines or tools, can often be attributed to flow processes. The noises arise due to changes in pressure, density and velocity. Aeroacoustics (also called flow acoustics) can be used to simulate the generation and propagation of these flow-related noises.
Application example: Organ pipe
The following example shows the sound generation and propagation of an organ pipe.
The sound transmitted through the air is perceived as noise by the human ear in a certain frequency as well as sound pressure level range.
In an organ pipe (lip pipe), the sound is generated by the vibration of a column of air inside the pipe. This type of sound generation is also used in the recorder.
Velocity distribution in the flow field (left) as well as at the base of the pipe (right).
Comparison of simulation and experiment of aeroacoustics
Far-field prediction with free-field propagation
3D visualization
Pressure fluctuations in the flow field
Your benefit
» Localization of sound sources
» Investigation of sound propagation
» Minimization of the causes of noise (noise reduction)
Anwedungsbeispiele:
– Interior acoustics (e.g. in the vehicle)
– Circulation noise from vehicles
– Valve noise
– Fan noise
– Noise generation in machines (e.g. rotating components)
Do you have any questions?
Your contact person:
Chadi Serhan
Head of Fluid Mechanics
Phone: +49 (0)7321 9343-257
E-Mail: c.serhan@merkle-partner.de