A flow field with a jet affected by a nonuniform cross flow
Abstract
Experimental results on the effects of the thickness of a floor boundary layer on a flow field in and around a single circular turbulent jet issuing perpendicularly through a flat channel floor are discussed. Measurements of total pressure, flow direction, and flow field velocity made with two different floor boundary layer thicknesses are reported. The channel flow pressure gradient with no jet is almost equal to zero in every direction. The tested jet exit velocity/cross flow velocity ratio is 1.94. The floor boundary layer is found to play an important role in the creation of a secondary swirling flow together with a strong negative pressure in the downstream side of the jet orifice. The increase in jet penetration due to vorticity in the floor boundary layer and the generation of two kinds of swirling flow far downstream of the jet orifice are studied.
- Publication:
-
JSME International Journal Series B
- Pub Date:
- July 1985
- Bibcode:
- 1985JSMEB..28.1387S
- Keywords:
-
- Boundary Layer Flow;
- Cross Flow;
- Flow Distribution;
- Nonuniform Flow;
- Turbulent Jets;
- Wall Flow;
- Channel Flow;
- Pressure Distribution;
- Three Dimensional Flow;
- Velocity Distribution;
- Vortices;
- Fluid Mechanics and Heat Transfer