Preliminary Experimental Study of Disturbances in a Laminar Boundary- Layer due to Distributed Surface Roughness
CASE WESTERN RESERVE UNIV CLEVELAND OH DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
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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.
- Fluid Mechanics