Velocity field of a round jet in a cross flow for various jet injection angles and velocity ratios
Abstract
A subsonic round jet injected from a flat plate into a subsonic crosswind of the same temperature was investigated. Velocity and pressure measurements in planes perpendicular to the path of the jet were made for nominal jet injection angles of 45 deg, 60 deg, 75 deg, 90 deg, and 105 deg and for jet/cross flow velocity ratios of four and eight. The velocity measurements were obtained to infer the properties of the vortex pair associated with a jet in a cross flow. Jet centerline and vortex trajectories were determined and fit with an empirical equation that includes the effects of jet injection angle, jet core length, and jet/cross flow velocity ratios.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1979
- Bibcode:
- 1979STIN...7932500F
- Keywords:
-
- Air Jets;
- Cross Flow;
- Gas Injection;
- Velocity Distribution;
- Wind Tunnel Tests;
- Flat Plates;
- Jet Boundaries;
- Pressure Distribution;
- Subsonic Flow;
- Tables (Data);
- V/Stol Aircraft;
- Vortices;
- Fluid Mechanics and Heat Transfer