Experimental Investigation Of Stepped Tip Gap Effects On The Performance Of A Transonic Axial Flow Compressor Rotor
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Author | : Donald W. Thompson |
Publisher | : |
Total Pages | : 0 |
Release | : 1997 |
Genre | : |
ISBN | : |
Presented at the International Gas Turbine & Aeroengine Congress & Exhibition, Orlando, FL, Jun 2-Jun 5, 1997.
Author | : Donald W. Thompson |
Publisher | : |
Total Pages | : 321 |
Release | : 1997-06-01 |
Genre | : Axial flow compressors |
ISBN | : 9781423572473 |
The effects of stepped tip gaps and clearance levels on the performance, flowfield, and stall characteristics of a transonic axial-flow compressor rotor were experimentally and numerically determined. A theory and mechanism for relocation of blockage in the rotor tip region was developed. A two-stage compressor with no inlet guide vanes was tested in the Wright Laboratories Compressor Research Facility located at Wright-Patterson Air Force Base, Ohio. The first-stage rotor was unswept and was tested for an optimum tip clearance with variations in stepped gaps machined into the casing near the aft tip region of the rotor. Nine casing geometries were investigated consisting of three step profiles at each of three clearance levels. For small and intermediate clearances, stepped tip gaps were found to improve pressure ratio, efficiency, and flow range for most operating conditions. At 100% design rotor speed, stepped tip gaps produced a doubling of mass flow range with as much as a 2.0% increase in mass flow and a 1.5% improvement in efficiency The flowfield characteristics associated with performance improvements were experimentally and numerically analyzed. Stepped tip gaps were found to have no significant effect on the stall characteristics of the rotor; the stability characteristics attributable to tip geometry were determined by the clearance over the forward portion of the rotor blade. This study provides guidelines for engineers to improve compressor performance for an existing design by applying an optimum casing profile.
Author | : George W. Lewis (Jr.) |
Publisher | : |
Total Pages | : 32 |
Release | : 1954 |
Genre | : Axial flow compressors |
ISBN | : |
Author | : Chetan S. Mistry |
Publisher | : Springer Nature |
Total Pages | : 534 |
Release | : 2020-07-31 |
Genre | : Technology & Engineering |
ISBN | : 9811550395 |
This volume presents selected papers presented during the National Aerospace Propulsion Conference (NAPC) held at Indian Institute of Technology Kharagpur. It brings together contributions from the entire propulsion community, spanning air-breathing and non-air-breathing propulsion. The papers cover aerospace propulsion-related topics, and discuss relevant research advances made in this field. It will be of interest to researchers in industry and academia working on gas turbine, rocket, and jet engines.
Author | : |
Publisher | : |
Total Pages | : 444 |
Release | : 2001 |
Genre | : Mechanical engineering |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 558 |
Release | : 1998 |
Genre | : Mechanical engineering |
ISBN | : |
Author | : IMechE (Institution of Mechanical Engineers) |
Publisher | : John Wiley & Sons |
Total Pages | : 390 |
Release | : 2004-12-27 |
Genre | : Technology & Engineering |
ISBN | : 9781860584756 |
Fans are probably the most commonly used machines – from computers to power station boilers, they come in all shapes and sizes. In today’s ever more demanding marketplace companies are evolving fans that are more efficient, quieter, and cheaper to run. These IMechE event transactions bring together international authors presenting their latest research and development. With significant developments, such as the impact of CFD on fan design and the increasingly common application of variable speed, International Conference on Fans provides a unique opportunity for both manufacturers and users of fans to share their experience and findings. Topics include: Noise and vibration Small fans and motors Computational fluid dynamics Cooling applications Operation and maintenance Impact of technology, legislation, and testing Fan design International Conference on Fans is vital reading for fan users, installers, consultants, and manufacturers and everyone concerned with power generation, industrial processes, commercial ventilation, air conditioning, tunnel and mine ventilation.
Author | : |
Publisher | : |
Total Pages | : 826 |
Release | : 2005 |
Genre | : Gas-turbines |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 338 |
Release | : 1987 |
Genre | : Mechanics, Applied |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1020 |
Release | : 1999 |
Genre | : Aeronautics |
ISBN | : |