Flow field study of a rectangular jet
Abstract
A rectangular jet has a complex three dimensional flow field. The objective was to increase the understanding of the rectangular jet. To do this, two rectangular nozzles were constructed and the subsonic jet velocities were measured, analyzed, and interpreted. The study concentrated on the near field region where the three dimensional flow field develops. The analysis included the time averaged velocity field, the complete Reynolds stress tensor, vorticity, turbulent kinetic energy production, and other parameters. Comparisons were made with previous studies. Also, a method of determining the mean pressure change in the jet flow field based on velocity and Reynolds stress tensor gradients was presented and compared with experimental data and numerical predictions. The results, analysis and interpretation were frequently related to previous theoretical vortex system models. As a result of discrepancies, a new vortex system model is presented. This study contributes substantially to the current understanding of three dimensional jet flow fields.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1990
- Bibcode:
- 1990PhDT........62S
- Keywords:
-
- Flow Distribution;
- Gas Jets;
- Jet Flow;
- Subsonic Flow;
- Three Dimensional Flow;
- Turbulence;
- Velocity Distribution;
- Vortices;
- Kinetic Energy;
- Mathematical Models;
- Near Fields;
- Numerical Analysis;
- Predictions;
- Reynolds Stress;
- Stress Tensors;
- Vorticity;
- Fluid Mechanics and Heat Transfer