An Experimental and Computational Investigation of Next-Generation Casing Treatments for Front-Stage
Abstract
We propose a research program focused on advanced Casing Treatments (CT) forextending operability of axial compressors. Compressor casings that are modified with holes, slots, and grooves have been used for decades with the objective of increasing the operability (i.e., stall margin). While many designs improve stall margin, most cause a concomitant decrease in the maximum efficiency. This, along with added manufacturing and weight issues, have led to only limited use of CT in applications.Our goals in this program are to improve our understanding of CT flow physics and to develop better predictive design methodologies for advanced CTs. The tasks will include an experimental program led by Notre Dame as well as a numerical program led by General Electric. Preliminary computations and measurements have shown that advanced axial slot designs can lead to dramatic improvements in stall and performance with little or no penalty to the stage efficiency. We intend to investigate the flow physics of how this is possible in order to advance our understanding and predictive capability for future designs.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 10, 2018
- Source ID
- N000141812426
Entities
People
- Scott Morris
Organizations
- Office of Naval Research
- United States Navy
- University of Notre Dame