Stereoscopic PIV measurements in a turbofan engine inlet with tailored swirl distortion

Tamara Guimarães, K. Todd Towe, Michael Nelson, Walter F. O’Brien, Caroline Kirk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

There is a present need for simulating and measuring the inlet swirl distortion generated by airframe/engine system interactions in a full-scale, turbofan ground testing environment. Understanding transonic fan response to swirl distortion requires thorough documentation of the swirl development as it approaches the fan. In past efforts, a method has been developed for generating arbitrary swirl distortions for ground test. The stream-wise development of swirl distortions generated in situ with this technique have been measured using stereoscopic particle image velocimetry (PIV) in a research turbofan engine. Data were obtained at 50% and 65% corrected fan speed for a StreamVane swirl-generating device designed to mimic specific hybrid wing/body configuration flight conditions. Measurements were taken at an aerodynamic interface plane (AIP) of one diameter upstream of the fan face and at a measurement plane 3.5 inches (0.17D) upstream from the fan face. A number of practical considerations and post-processing steps are discussed which enable the application in the full scale engine. The results provide the first experimental view of three-velocity component flow due to transonic fan/swirl distortion interaction, demonstrating new tools for improving airframe/engine integration.

Original languageEnglish (US)
Title of host publication31st AIAA Aerodynamic Measurement Technology and Ground Testing Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103643
DOIs
StatePublished - 2015
Event31st AIAA Aerodynamic Measurement Technology and Ground Testing Conference, 2015 - Dallas, United States
Duration: Jun 22 2015Jun 26 2015

Publication series

Name31st AIAA Aerodynamic Measurement Technology and Ground Testing Conference

Conference

Conference31st AIAA Aerodynamic Measurement Technology and Ground Testing Conference, 2015
Country/TerritoryUnited States
CityDallas
Period6/22/156/26/15

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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