Aero Acoustic Test

Aero-acoustic cavity Application Challenge 1-01 © copyright ERCOFTAC 2004

© ERCOFTAC 2004 Test Data © ERCOFTAC 2004 Overview of Tests The experimental conditions are described in TR-026-20.pdf. The full range of tests covers a variety of free-stream Mach numbers between 0.4 and 1.35, and for two cavity configurations, so-called shallow and deep. We concentrate here on a single one of these, namely M=0.85 deep cavity.

Unsteady pressure measurements were recorded by 10 Kulite transducers along the centreline of the rig (which did not coincide with the centreline of the cavity itself), at a sampling rate of 6000Hz. The position of each transducer is given in Table 1.