free-stream flow
free-stream flow

Continuous lines are free air stream airflow.
The air in a region where pressure, temperature, and relative velocity are unaffected by the passage of aircraft through it. Also known as
relative airflow (RAF).
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive
The peak value of TKE of bare cylinder is greater than those of all permeable cylinders as a sign of large scale vortices which transfer momentum from the
free-stream flow into the wake region.
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