Email RIS file
Bookmark
Report an Issue

Flow Visualization at Cryogenic Conditions Using a Modified Pressure Sensitive Paint Approach

Author
Oglesby, Donald M.
Published
[2005].
Physical Description
1 electronic document
Additional Creators
Carter, Melissa B., Ingram, JoAnne L., Campbell, Richard L., Goad, William K., Watkins, A. Neal, Sprinkle, Danny R., Obara, Clifford J., Bell, James H., and Pendergraft, Odis C., Jr.
Online Version

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
A modification to the Pressure Sensitive Paint (PSP) method was used to visualize streamlines on a Blended Wing Body (BWB) model at full-scale flight Reynolds numbers. In order to achieve these conditions, the tests were carried out in the National Transonic Facility operating under cryogenic conditions in a nitrogen environment. Oxygen is required for conventional PSP measurements, and several tests have been successfully completed in nitrogen environments by injecting small amounts (typically < 3000 ppm) of oxygen into the flow. A similar technique was employed here, except that air was purged through pressure tap orifices already existent on the model surface, resulting in changes in the PSP wherever oxygen was present. The results agree quite well with predicted results obtained through computational fluid dynamics analysis (CFD), which show this to be a viable technique for visualizing flows without resorting to more invasive procedures such as oil flow or minitufts.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20050061114.
AIAA Pape -2005-0456.
43rd AIAA Aerospace Sciences Meeting and Exhibit; 10-13 Jan. 2005; Reno, NV; United States.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15633847