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Understanding and mitigating tip leakage and endwall losses in high pressure ratio cores
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Christophel, Jesse |
| Copyright Year | 2015 |
| Description | Reducing endwall and tip secondary flow losses will be a key enabler for the next generation of commercial and military air transport and will be an improvement on the state-of-the-art in turbine loss reduction strategies. The objective of this research is three-fold: 1) To improve understanding of endwall secondary flow and tip clearance losses 2) To develop novel technologies to mitigate these losses and test them in low-speed cascade and rig environments 3) To validate predictive tools To accomplish these objectives, Pratt & Whitney (P&W) has teamed with Pennsylvania State University (PSU) to experimentally test new features designed by P&W. P&W will create new rim-cavity features to reduce secondary flow loss and improve purge flow cooling effectiveness and new blade tip features to manage leakage flows and reduce tip leakage secondary flow loss. P&W is currently developing technologies in these two areas that expect to be assimilated in the N+2/N+3 generation of commercial engines. |
| File Size | 5354768 |
| Page Count | 68 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150018069 |
| Archival Resource Key | ark:/13960/t3vt6nn3r |
| Language | English |
| Publisher Date | 2015-08-01 |
| Access Restriction | Open |
| Subject Keyword | Turbomachinery Turbines Aerodynamic Losses Leakage Blade Tips Turbine Blades Low Speed Unsteady Flow Cascade Flow Axial Flow Turbines Losses Flow Distribution Proving Wind Tunnel Tests Secondary Flow Prediction Analysis Techniques Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
