Instantaneous velocity field measurements of a turbulent rectangular jet (AR-4) using particle image displacement velocimetryA whole field experimental technique, commonly referred to as Particle Image Displacement Velocimetry (PIDV) is used for the measurement of the two dimensional instantaneous velocity fields in the transition region of a three dimensional jet issuing from a rectangular nozzle of an aspect ratio 4. The instability process of an initially laminar jet is studied visually and quantitatively to determine the structure and growth of the mixing region of the jet. The experiments were performed using an air jet at a Reynolds number based on the hydraulic diameter of 3600. The roll-up of the laminar shear layer into vortices and their subsequent interactions are examined.
Document ID
19880035138
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lourenco, L. (Florida Agricultural and Mechanical Univ. Tallahassee, FL, United States)
Krothapalli, A. (Florida Agricultural and Mechanical University; Florida State University, Tallahassee, United States)