Effect of suction and blowing on boundary-layer transitionThe effects of wall blowing and suction on boundary-layer stability and transition are studied on a flat plate. Titanium panels, in which 0.063 mm diameter holes were drilled on 0.635 mm centers, are inserted on the plate. Suction level and distribution are variable. Disturbances are introduced by means of a vibrating ribbon and measurements of both mean-flow and disturbance-flow velocities are made with a hot wire. Disturbance amplitudes are measured as a function of Reynolds number, frequency, and suction characteristics and compared with the previous Dynapore results of Reynolds and Saric. Transition measurements under natural and forced conditions are also made. The stabilizing effects of suction are documented. It is also shown that very high local flow rates through the suction holes (which approach a hole Reynolds number of 300) do not destabilize the flow. On the other hand, weak blowing lowers the transition Reynolds number but is found not to cause serious problems.
Document ID
19830035265
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Saric, W. S. (Virginia Polytechnic Institute and State University Blacksburg, VA, United States)
Reed, H. L. (Stanford University Stanford, CA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1983
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 83-0043
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting