Abstract
A 6.67 scale model of the Advanced Recirculation Total Impingement Cooling (ARTIC) gas turbine vane insert’s leading edge was designed, built using stereolithography (SLA) fabrication methods, and tested using Magnetic Resonance Velocimetry (MRV), a non-invasive data acquisition technique that captures three-dimensional, three-component velocity fields of a copper sulfate solution over the course of several hours. The experimental apparatus supplied constant flow rates through a test section placed within a 3.0 Tesla MRI magnet. Tests were run at two fully turbulent flow rates corresponding to Reynolds numbers based on hydraulic diameter of 10,000 and 20,000 with the higher flow rate case achieving dynamic similarity with the full-scale ARTIC device. The experimental results elucidated key details and intricacies of the complex flow within the insert. Analysis of flow distribution between each of the three independent impingement zones revealed a degree of measurable jet to jet variability. Stagnation and recirculation zones were detected, informing design modifications and enabling assessment of inlet effects on impingement. Measurement uncertainty was assessed and estimated to be approximately 7.5% of the peak velocity at the inlet to the central feed cavity.
| Original language | English |
|---|---|
| Title of host publication | Fluids Engineering |
| Publisher | American Society of Mechanical Engineers (ASME) |
| ISBN (Electronic) | 9780791859445 |
| DOIs | |
| State | Published - 2019 |
| Externally published | Yes |
| Event | ASME 2019 International Mechanical Engineering Congress and Exposition, IMECE 2019 - Salt Lake City, United States Duration: Nov 11 2019 → Nov 14 2019 |
Publication series
| Name | ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) |
|---|---|
| Volume | 7 |
Conference
| Conference | ASME 2019 International Mechanical Engineering Congress and Exposition, IMECE 2019 |
|---|---|
| Country/Territory | United States |
| City | Salt Lake City |
| Period | 11/11/19 → 11/14/19 |
Funding
The authors thank the AFRL for providing funding to conduct this study, and FTT for the inspiration with their ARTIC film cooling scheme. Use of the imaging facilities was provided by the Richard M. Lucas Center for Magnetic Resonance Imaging at Stanford University. Special thanks are due to the U.S. Army Combat Capabilities Development Command (CCDC) Armaments Center at Picatinny Arsenal for assistance in designing and printing the test article. The views expressed herein are those of the authors and do not purport to reflect the position of the United States Military Academy, the Department of the Army, or the Department of Defense.