Accession Number : ADP005899

Title :   A Non-Invasive Experimental Technique for the Measurement of Unsteady Velocity and Vorticity Fields,

Corporate Author : FLORIDA STATE UNIV TALLAHASSEE

Personal Author(s) : Lourenco, L. ; Krothapalli, A.

Report Date : JUN 1987

Pagination or Media Count : 10

Abstract : A new velocity measurement technique is described that provides the simultaneous visualization of a two-dimensional streamline pattern and the quantification of the velocity field. The main advantage of this technique is that the velocity field can be measured with sufficient accuracy and spatial resolution so that the vorticity field can be readily obtained. This technique is ideally suited for the study of unsteady vortical flows, which occur in high angle of attack aerodynamics. The technique, some of the important parameters that effect its use, and some recent examples are described.

Descriptors :   *UNSTEADY FLOW, *VORTICES, FLOW FIELDS, VELOCITY, MEASUREMENT, VARIATIONS, FLOW VISUALIZATION, AIRFOILS, CYLINDRICAL BODIES, ANGLE OF ATTACK.

Subject Categories : Fluid Mechanics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE