- Author
-
Otugen, V.
- Title
- Mixing in Turbulent Jets With Streamline Curvature. BFRL Fire Research Seminar.
Seminar. VHS Video.
- Coporate
- Polytechnic Univ., Brooklyn, NY
- Report
-
BFRL Fire Research Seminar
January 27, 1998
- Keywords
-
turbulent jets
|
mixing
- Abstract
- The effect of mild streamline curvature on the structure of turbulent jets will be discussed. The results of an experimental study that was carried out in a closed-loop water tunnel to investigate this flow phenomenon will be presented. The small streamline curvature is achieved by introducing an initially round turbulent jet tangentially into a stream flowing through a curved channel. The jet issues from a straight pipe and has a fully-developed exit velocity profile. Both the jet Reynolds number and the coflow-to-jet velocity ratio are kept constant, and the structural features and mixing characteristics of the curved jet are compred to those for straight jets with similar initial conditions. Planar visualizations are carried out using laser Mie scattering to investigate the jet trajectory and cross-sectional evolution. Laser Doppler velocimetry is used to measure the streamwise velocity in both the plane of curvature and the surface normal to the plane of curvature.