Swirling flow evolution Part 2: Streamflow 2D+t model validated with stereo PIV measurements

William C. Schneckiii, Tamara Guimarães, Dustin J. Frohnapfel, K. Todd Lowe, Walter F. O’Brien, William W. Copenhaver

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

12 Scopus citations


Inlet swirl distortion is currently an important aspect of research for highly embedded engines (BLI, etc). StreamFlow is a numerical tool developed at Virginia Tech to assist in the design of StreamVane™ swirl generators for experimental testing of fan response. This model calculates the downstream flow development of a StreamVane discharge swirl profile, enabling prediction of distortion intensity, extent, and location. This model solves these profiles on the order of seconds, thus making it a very useful, interactive design tool. The results of the model have been validated against stereoscopic PIV experimental data. The intensity and migration of the flow structures in the initial profile were well matched by the model. RMS averaged errors are on the order of 3 − 6% for in-plane flow velocities and 2−4° for radial and tangential flow angles. The inviscid, streamwise-vorticity driven model matches well with the experimental data; providing further evidence that the dominant physics have been properly identified. StreamFlow satisfies a need that has been identified previously,1,2 and therefore is an enabling technology that facilitates significantly improved design of StreamVanes for higher fidelity replication of desired flow fields. These StreamVanes can then be used more effectively for improved assessment of the performance of downstream flow machines.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
StatePublished - 2017
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: Jan 9 2017Jan 13 2017

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting


Other55th AIAA Aerospace Sciences Meeting
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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