Study of a bounded jet flow considering the initial turbulence - Experiments with a nozzle having aspect ratio of 3
Abstract
According to the experimental results concerned with jet flow from nozzles contracted on two sides and on four sides in the region bounded by two parallel flat plates, behavior of the flow depends considerably on the nozzle shape and the initial turbulence intensity. The variance and the degree of deformation of the velocity profile between the flat plates and the displacement thickness of boundary layer developed on them are newly introduced in this paper. By using these measures, it has been found that the extent of the secondary flow induced by the flat plates can be estimated quantitatively. Furthermore, the velocity profile of a bounded jet in the streamwise direction is similar to that of a two-dimensional jet approximately regardless of the distance from the bounding plate, except for a flow with small initial turbulence intensity with the nozzle contracted on all sides.
- Publication:
-
JSME International Journal Series B
- Pub Date:
- December 1984
- Bibcode:
- 1984JSMEB..27.2730N
- Keywords:
-
- Boundary Layer Flow;
- Flow Velocity;
- Jet Flow;
- Nozzle Geometry;
- Outlet Flow;
- Turbulent Flow;
- Low Aspect Ratio;
- Parallel Plates;
- Secondary Flow;
- Two Dimensional Jets;
- Velocity Distribution;
- Fluid Mechanics and Heat Transfer