The effects of varying axial gap on the unsteady flow field between the stator and rotor of a transonic compressor stage are important because they can result in significant changes in stage mass flow rate, pressure rise, and efficiency. Some of these effects are analyzed with measurements using digital particle image velocimetry (DPIV) and with time-accurate simulations using the 3D unsteady Navier-Stokes computational fluid dynamics solver TURBO. Generally there is excellent agreement between the measurements and simulations, instilling confidence in both. Strong vortices of the wake can break up the rotor bow shock and contribute to loss. At close spacing vortices are shed from the trailing edge of the upstream stationary blade row in response to the unsteady, discontinuous pressure field generated by the downstream rotor bow shock. Shed vortices increase in size and strength and generate more loss as spacing decreases, a consequence of the effective increase in rotor bow shock strength at the stationary blade row trailing edge. A relationship for the change in shed vorticity as a function of rotor bow shock strength is presented that predicts the difference between close and far spacing TURBO simulations.
Skip Nav Destination
Article navigation
October 2006
Technical Papers
An Investigation of Wake-Shock Interactions in a Transonic Compressor With Digital Particle Image Velocimetry and Time-Accurate Computational Fluid Dynamics
Steven E. Gorrell,
Steven E. Gorrell
Air Force Research Laboratory
, AFRL/PRTF, Bldg. 18, Wright-Patterson AFB, OH 45433
Search for other works by this author on:
David Car,
David Car
Air Force Research Laboratory
, AFRL/PRTF, Bldg. 18, Wright-Patterson AFB, OH 45433
Search for other works by this author on:
Steven L. Puterbaugh,
Steven L. Puterbaugh
Air Force Research Laboratory
, AFRL/PRTF, Bldg. 18, Wright-Patterson AFB, OH 45433
Search for other works by this author on:
Jordi Estevadeordal,
Jordi Estevadeordal
Innovative Scientific Solutions, Inc.
, 2766 Indian Ripple Road, Dayton, OH 45440
Search for other works by this author on:
Theodore H. Okiishi
Theodore H. Okiishi
College of Engineering, 104 Marston Hall,
Iowa State University
, Ames, IA 50011
Search for other works by this author on:
Steven E. Gorrell
Air Force Research Laboratory
, AFRL/PRTF, Bldg. 18, Wright-Patterson AFB, OH 45433
David Car
Air Force Research Laboratory
, AFRL/PRTF, Bldg. 18, Wright-Patterson AFB, OH 45433
Steven L. Puterbaugh
Air Force Research Laboratory
, AFRL/PRTF, Bldg. 18, Wright-Patterson AFB, OH 45433
Jordi Estevadeordal
Innovative Scientific Solutions, Inc.
, 2766 Indian Ripple Road, Dayton, OH 45440
Theodore H. Okiishi
College of Engineering, 104 Marston Hall,
Iowa State University
, Ames, IA 50011J. Turbomach. Oct 2006, 128(4): 616-626 (11 pages)
Published Online: February 1, 2005
Article history
Received:
October 1, 2004
Revised:
February 1, 2005
Citation
Gorrell, S. E., Car, D., Puterbaugh, S. L., Estevadeordal, J., and Okiishi, T. H. (February 1, 2005). "An Investigation of Wake-Shock Interactions in a Transonic Compressor With Digital Particle Image Velocimetry and Time-Accurate Computational Fluid Dynamics." ASME. J. Turbomach. October 2006; 128(4): 616–626. https://doi.org/10.1115/1.2220049
Download citation file:
Get Email Alerts
Evaluating Thin-Film Thermocouple Performance on Additively Manufactured Turbine Airfoils
J. Turbomach (July 2025)
Thermohydraulic Performance and Flow Structures of Diamond Pyramid Arrays
J. Turbomach (July 2025)
Related Articles
Investigation of Loss Generation in an Embedded Transonic Fan Stage at Several Gaps Using High-Fidelity, Time-Accurate Computational Fluid Dynamics
J. Turbomach (January,2010)
Study of Wake-Blade Interactions in a Transonic Compressor Using Flow Visualization and DPIV
J. Fluids Eng (March,2002)
Experimental Investigation of the Effects of a Moving Shock Wave on Compressor Stator Flow
J. Turbomach (January,2007)
Analysis of the Interrow Flow Field Within a Transonic Axial Compressor: Part 2—Unsteady Flow Analysis
J. Turbomach (January,2001)
Related Proceedings Papers
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Other Components and Variations
Axial-Flow Compressors
Threshold Functions
Closed-Cycle Gas Turbines: Operating Experience and Future Potential