Abstract
This chapter discusses a research focused on the measurement of very-high-amplitude acoustic noise, primarily jet noise. This research addresses long-range issues in measurement technology in the anticipation of advances in the computational predictions of radiation from full-scale jets. An accurate measurement of acoustic noise very near to the jet plume provides critical data, which are required to validate computational jet-noise models. Different specific sources of jet-engine noise are linked to unsteady flows associated with the mean flow of the engine exhaust. The research intends to develop well-controlled and repeatable sound fields and to measure the perturbation of these fields and the distortion introduced by a number of sensor types and configurations. A technical approach focused to investigate the performance of standard measurement microphones in very-high-amplitude sound fields-with emphasis on the potential degradation of performance because of nonlinear mechanical and acoustical processes-and to develop alternate sensors and sensing techniques against which to compare the performance of standard microphones is also discussed in the chapter.
Original language | English (US) |
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Title of host publication | Combustion Processes in Propulsion |
Publisher | Elsevier Inc. |
Pages | 223-230 |
Number of pages | 8 |
ISBN (Print) | 9780123693945 |
DOIs | |
State | Published - Jan 1 2006 |
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)