Development of the turbulent confined jet
Abstract
The mixing behavior of a confined jet is of great importance in connection with flow processes occurring in many devices, including ejector pumps, jet engine combustion chambers, and burners. The present study is concerned with a confined jet involving recirculation, taking into account a flow which is divided into four regions, each having different flow characteristics. It is pointed out that the primary air jet was fully developed. Measurements were conducted in an experimental section with a diameter of 99 mm and a length corresponding to 30 diameters. The measurements cover the Reynolds number range from 19,850 to 52,700. The flow is described by elliptic partial differential equations for the time-mean variables. It is found that the intensity of the mixing process is increased by the combined effect of thick nozzle lip and fully developed jet flow.
- Publication:
-
Gesellschaft angewandte Mathematik und Mechanik Jahrestagung Goettingen West Germany Zeitschrift Flugwissenschaften
- Pub Date:
- 1986
- Bibcode:
- 1986GMMWJ..66..223I
- Keywords:
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- Computational Fluid Dynamics;
- Flow Measurement;
- Jet Mixing Flow;
- Turbulent Jets;
- Nozzle Flow;
- Partial Differential Equations;
- Pressure Measurement;
- Velocity Measurement;
- Fluid Mechanics and Heat Transfer