Full Content is available to subscribers

Subscribe/Learn More  >

Effect of Wake Negative Jet Flow on the Boundary Layer Transition of Compressor Cascade

[+] Author Affiliations
Yangang Wang, Qijie Shao, Wenbing Hu

Northwestern Polytechnical University, Xi’an, China

Paper No. GT2018-76367, pp. V02AT45A020; 8 pages
  • ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition
  • Volume 2A: Turbomachinery
  • Oslo, Norway, June 11–15, 2018
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5099-2
  • Copyright © 2018 by ASME


The present paper performed a numerical study on a high-loaded and high turning compressor cascade, where the unsteady boundary layer transition behavior on the cascade blade undergoing negative jet flow is revealed. The two-equation SST turbulence model coupled with Langtry-Menter transition model is verified and applied on all the computations in present study. Reynolds number and turbulent intensity are selected as two dominate candidates which can significantly influence the transition behavior and their effect were examined. Results show that under all the tested case (i.e., varying Reynolds number and turbulence intensity), the flow structures on the suction surface of the blade are rolled up when the unsteady negative jet flow directly impacting on the blade. However, the unsteady wake from upstream has not influenced the boundary layer. For high Reynolds number (i.e., Re = 400,000) the rolling up and shed of the boundary layer only occurs at blade trailing edge. The wake is evidenced be able to bring more energy into the boundary layer and thus separation and loss can be significantly decayed and reduced. Moreover, decreasing the turbulent intensity would in practical decay the transition in the boundary layer and therefore make the boundary layer easy to separate.

Copyright © 2018 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In