Effect of Grid Generated Turbulence on Near Field Characteristics of Round Jets
-
S. Sivakumar
Abstract
The effect of the small scale turbulence on the development of the round jet is experimentally studied using hot wire anemometry. The small scale turbulence is generated by placing a grid having grid spacing near the nozzle exit. Experiments are carried out for the range of Reynolds numbers (4000, 6000 and 8000). It is observed that the small scale structures present in the jet slows down the jet mixing characteristics and there by retards the decay rate in the near-field region. It is observed that in the grid disturbed jets, the ratio of the turbulent kinetic energy to mean-flow kinetic energy is relatively lower than that of the undisturbed jet without any grid. From the spectral analysis, it is observed that the grid disturbed jets has higher energy content than that of the undisturbed jets.
©[2013] by Walter de Gruyter Berlin Boston
Articles in the same Issue
- Masthead
- Study on Practical Application of Turboprop Engine Condition Monitoring and Fault Diagnostic System Using Fuzzy-Neuro Algorithms
- Effect of the Axial Spacing between Vanes and Blades on a Transonic Gas Turbine Performance and Blade Loading
- Study on Design of High Efficiency and Light Weight Composite Propeller Blade for a Regional Turboprop Aircraft
- Effects of Rotor Blade Scaling on High-Pressure Turbine Unsteady Loading
- The Use of Air Injection Nozzles for the Forced Excitation of Axial Compressor Blades
- Effect of Grid Generated Turbulence on Near Field Characteristics of Round Jets
- Study of Shock Wave Control by Suction & Blowing on a Highly-loaded Transonic Compressor Cascade
- Research for the Fluid Field of the Centrifugal Compressor Impeller in Accelerating Startup
- Study of Underexpanded Sonic Jets by Numerical Simulation
- Experimental and Numerical Study of Gap Size and Cooling Flow Rate Effects on Tip Flow of Gas Turbine Blade
- Numerical Investigations of Slip Phenomena in Centrifugal Compressor Impellers
Articles in the same Issue
- Masthead
- Study on Practical Application of Turboprop Engine Condition Monitoring and Fault Diagnostic System Using Fuzzy-Neuro Algorithms
- Effect of the Axial Spacing between Vanes and Blades on a Transonic Gas Turbine Performance and Blade Loading
- Study on Design of High Efficiency and Light Weight Composite Propeller Blade for a Regional Turboprop Aircraft
- Effects of Rotor Blade Scaling on High-Pressure Turbine Unsteady Loading
- The Use of Air Injection Nozzles for the Forced Excitation of Axial Compressor Blades
- Effect of Grid Generated Turbulence on Near Field Characteristics of Round Jets
- Study of Shock Wave Control by Suction & Blowing on a Highly-loaded Transonic Compressor Cascade
- Research for the Fluid Field of the Centrifugal Compressor Impeller in Accelerating Startup
- Study of Underexpanded Sonic Jets by Numerical Simulation
- Experimental and Numerical Study of Gap Size and Cooling Flow Rate Effects on Tip Flow of Gas Turbine Blade
- Numerical Investigations of Slip Phenomena in Centrifugal Compressor Impellers
