Accession Number : ADA191354

Title :   Experimental Investigation of Retarded Unsteady Turbulent Boundary Layers.

Descriptive Note : Periodic rept. no. 2, Sep-Dec 87,

Corporate Author : GRENOBLE UNIV (FRANCE) INST DE MECANIQUE

Personal Author(s) : Binder, G

PDF Url : ADA191354

Report Date : Dec 1987

Pagination or Media Count : 4

Abstract : The work done was essentially devoted to modifying and improving the apparatus for the measurements to be performed under this contract, in particular: 1. the test section of the flow loop. The reinforcement of diffusor plates and the provisions for easy insert of wall hot film gages have been finished. 2. carriage for displacement of hot films probes: construction is in progress. 3. Small jet facility for in-situ calibration of X-hot wire probes: construction by the laboratory shop is in progress. 4. instrumentation: a technique of mounting TSI miniature hot film probes has been developed. This sensor has been tested and its performance compared to that of the DISA sensors previously used. The emission optics of the home-made laser Doppler anemometer have also been improved to facilitate measurements. 5. data acquisition: an OLIVETTI M-240 micro-computer (640 K core memory, 20 M byte hard disk) has been selected and ordered. Keywords: Turbulent boundary layer; Turbulent flow; Boundary layer flow.

Descriptors :   *TURBULENT BOUNDARY LAYER, BOUNDARY LAYER FLOW, CALIBRATION, DATA ACQUISITION, DETECTORS, DIFFUSERS, DISPLACEMENT, EMISSION, FILMS, FLOW, GAGES, HIGH TEMPERATURE, LABORATORIES, LOOPS, MINIATURIZATION, OPTICS, PROBES, TEST EQUIPMENT, TURBULENT FLOW, WALLS, MEASUREMENT, RETARDATION, UNSTEADY FLOW, FRANCE

Subject Categories : Fluid Mechanics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE