Flow-Acoustics: Theory and Benchmarking
CoRR(2024)
摘要
The urgent need for transitioning to green energy solutions, particularly in
the context of house heating and urban redensification, has brought the issue
of fan noise aeroacoustics investigations to the forefront. As societies
worldwide strive to mitigate climate change and reduce carbon emissions,
adopting sustainable heating technologies such as air heat pumps has gained
significant traction. In Germany, renowned for its commitment to environmental
sustainability, the "TA Lärm" regulations, derived from the
"Bundes-Immissionsschutzgesetz," impose stringent limits on noise levels both
inside and outside buildings across various applications. These regulations
delineate permissible noise levels during daytime (6 AM to 10 PM) and nighttime
(10 PM to 6 AM), with particular emphasis on protecting residential areas with
low noise limits. Moreover, the noise limits prescribed for indoor environments
are even more stringent. Given the necessity of maintaining acoustic comfort
and quality of life, compliance with these regulations necessitates meticulous
attention to noise generation sources, especially those associated with heating
and ventilation systems. Consequently, understanding and mitigating fan noise
through aeroacoustic investigations is essential to ensure the successful
adoption and integration of green energy solutions in residential and urban
settings. In the following, an experimental benchmark for a low-pressure rise
axial fan (FAN-01) is presented, and several prediction methods of the sound
pressure and sound power are evaluated.
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