Numerical Investigations of Slip Phenomena in Centrifugal Compressor Impellers
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Jeng-Min Huang
,
Kai-Wei Luo
Abstract
This study systematically investigates the slip phenomena in the centrifugal air compressor impellers by CFD. Eight impeller blades for different specific speeds, wrap angles and exit blade angles are designed by compressor design software to analyze their flow fields. Except for the above three variables, flow rate and number of blades are the other two. Results show that the deviation angle decreases as the flow rate increases. The specific speed is not an important parameter regarding deviation angle or slip factor for general centrifugal compressor impellers. The slip onset position is closely related to the position of the peak value in the blade loading factor distribution. When no recirculation flow is present at the shroud, the variations of slip factor under various flow rates are mainly determined by difference between maximum blade angle and exit blade angle, Δβmax-2. The solidity should be of little importance to slip factor correlations in centrifugal compressor impellers.
©[2013] by Walter de Gruyter Berlin Boston
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- Masthead
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- 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
