Accession Number : AD0848242

Title :   Flow Noise and Related Measurements in the TRG Water-Tunnel Facility.

Descriptive Note : Technical rept.,

Corporate Author : CONTROL DATA CORP MELVILLE NY TRG DIV

Personal Author(s) : Bhat, Waman V.

Report Date : JAN 1968

Pagination or Media Count : 79

Abstract : Description of the operation of a 'blow-down'-type, low-noise water tunnel developed for measuring turbulent boundary layer (TBL) noise on large-diameter sonar transducers is presented. Some of the tunnel characteristics given include mean velocity profile and TBL noise measurements on 1/16 in., 3/8 in., and 5 in. D transducers. TBL noise measured on 1/16 in. and 3/8 in. D transducers compares well with the noise measurements carried out by other investigators. (Author)

Descriptors :   (*TURBULENT BOUNDARY LAYER, NOISE), WATER TUNNELS, TRANSDUCERS, REDUCTION, PRESSURE, SURFACES, OPERATION, MODEL TESTS, UNDERWATER VEHICLES, SONAR DOMES.

Subject Categories : Test Facilities, Equipment and Methods
      Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE