Vibration of and Acoustic Radiation from a Panel Excited by Adverse Pressure Gradient Flow
Abstract
Flow with uniform adverse pressure gradient was created over the surface of a steel test plate. Vibration velocity levels on the plate and acoustic radiation from the plate were measured and compared with theoretical estimates. The measured vibration levels agree with theory for frequencies above those for hydrodynamic coincidence. Below these frequencies theoretical predictions of vibration levels are too high, but theoretical predictions of radiated sound power, based on measured vibration levels, are too low. Possible reasons for these compensating errors are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1976
- Accession Number
- ADA032070
Entities
People
- Patrick Leehey
- Yi Mason Chang
Organizations
- Massachusetts Institute of Technology