Accession Number:

AD0684711

Title:

MEASUREMENTS OF FLOW BREAKDOWN IN RECTANGULAR WIND TUNNEL WORKING SECTIONS,

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

Report Date:

1968-11-01

Pagination or Media Count:

16.0

Abstract:

The report describes an experimental investigation of the model lift coefficients required to cause flow breakdown in low speed wind tunnels having test section breadth-to-height ratios of 0.5, 1.0, and 2.0. A family of jet flap wing models was used in the investigation. The model height-to-span, the momentum-area-to-tunnel area, and the model drag-to-lift ratios were varied. Flow breakdown is shown to be primarily a function of the drag-to-lift ratio and a lift coefficient based upon the measured dynamic pressure, measured lift, and the tunnel cross-sectional area beneath the model span. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE