Machine Noise and Flow Noise
ACS 597 - Flow-Induced Noise - Introduction to the theoretical and experimental aspects of
flow-induced noise created by low-Mach number flows of various complexities. Topics include basic fluid
flow concepts, fundamental flow noise theory, aeolian tones, turbulent boundary layer noise and wall
pressure fluctuations, lifting surface noise, fan and blower noise.
AERSP 511 - Aerodynamically Induced Noise - Review of fluid mechanics. General theory of
aerodynamic sound. Noise radiation from jets, boundary layers, rotors and fans. Structural response.
AERSP 524/ME 524 - Homogeneous Turbulence - First in two-part series. Similarity and scaling,
vorticity dynamics; Fourier spectral representation; interscale energy transfer. Numerical simulations
and experimental measurement.
AERSP 525/ME 525 - Inhomogeneous Turbulence - Second in two-part series. Instability and
transition; turbulence models; Reynolds stress closure schemes; large eddy simulations, wave models,
turbulence measurements.
ME 458 - Noise Control in Machinery - Nature of noise sources in machine elements and systems.
Propagation and reduction of noise. Effects of noise on man.
ME597/ACS 597 - Advanced Noise Control - Advanced concepts of noise control-by-design applied
to mechanical systems. Methodologies covered will include 1) passive treatments using resistive elements
(sound absorbers, vibration damping) and reactive elements (tailoring of material stiffness and mass),
2) active control of sound and vibration and 3) numerical programs (boundary elements) that provide means
of computing the sound power of complex radiators.
CMDIS 534 - Noise and Hearing - Noise-induced hearing problems; interference with communication;
annoyance and community problems caused by acoustic energy; regulations and standards.
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