Accession Number:

ADA102072

Title:

Preliminary Experimental Study of Disturbances in a Laminar Boundary- Layer due to Distributed Surface Roughness

Descriptive Note:

Final rept.

Corporate Author:

CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s):

Report Date:

1981-05-01

Pagination or Media Count:

103.0

Abstract:

Mean flow and disturbance measurements have been made on a flat plate model, one meter long in the CWRU low speed wind tunnel using hot-wire anemometry. Tests were conducted on a smooth plate and with two different grades of sandpaper covering first with a sandpaper covering giving Re sub K values centered around 10 and then with a coarser sandpaper have Re sub K values of about 150. The mean flow measurements indicated Blasius profiles for the smooth plate and with the finer roughness. With the coarser roughness the profile was best approximated by a Blasius profile at the early stations but then progressed toward a turbulent profile.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE