Digitale Medien
[S.l.]
:
American Institute of Physics (AIP)
Physics of Fluids
6 (1994), S. 397-403
ISSN:
1089-7666
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Smoke visualization studies have been made on the flow fields of wall bounded vortices generated by puffing air through an orifice. The characteristics of wall bounded vortices produced by three orifices constructed by placing a dividing plate perpendicular to a circular orifice plate have been investigated. The three orifices were a full circular opening, a three-quarter circular opening, and a semicircular opening. It was found that the vorticity concentrated in the wall shear layer of the three-quarter and semicircular orifices was due to the separation of the boundary layer on the dividing plate and its interaction with the arch shaped vortex generated at the perimeter of the orifice. An interesting observation is that the wall bounded vortex from the semicircular orifice moved in a stable manner, whereas, the vortex ring produced by the circular orifice with the dividing plate at the bottom of the orifice was extremely unstable.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.868036
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