Accession Number : ADP008969

Title :   Phase-Coupled LDV- and Piezo-Array Measurements in Unsteady Flows,

Corporate Author : TECHNISCHE UNIV BERLIN (GERMANY F R)

Personal Author(s) : Brauckhoff, R. ; Nitsche, W. ; Dues, M. ; Siekmann, H. E.

Report Date : 23 JUL 1992

Pagination or Media Count : 6

Abstract : Unsteady Cascade Flows project includes experimental investigations of unsteady flow phenomena in an inlet guide vane of a preswirl-controlled axial propeller-pump by means of phase-coupled measurements of a Laser-Doppler-Velocimeter and piezoelectric surface-pressure sensors. To investigate the basic flow conditions and flow states on the vane in dependence of flap deflections, the complex 3D-flow in the hydraulic propeller pump was reduced to a 2D-flow on a single vane-model. The rotor-stator interactions on the inlet guide vane were simulated by means of an additional flapping wing, which was installed downstream of the vane and could be oscillated at various frequencies and amplitude. (Author)

Descriptors :   *FLOW VISUALIZATION, *WAKE, *LASER VELOCIMETERS, *AERIAL PROPELLERS, UNSTEADY FLOW, CASCADES(FLUID DYNAMICS), THREE DIMENSIONAL FLOW, TRANSFORMATIONS(MATHEMATICS), TWO DIMENSIONAL FLOW, INLET GUIDE VANES, GERMANY.

Subject Categories : Fluid Mechanics
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE