0

Full Content is available to subscribers

Subscribe/Learn More  >

Effect of Tandem Blading in Contra-Rotating Axial Flow Fans

[+] Author Affiliations
Manas Madasseri Payyappalli, A. M. Pradeep

Indian Institute of Technology Bombay, Mumbai, India

Paper No. GT2018-75477, pp. V02AT39A008; 12 pages
doi:10.1115/GT2018-75477
From:
  • 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

abstract

With the ever-increasing demand for improved fuel efficiency and lower emissions, there is a significant emphasis on finding innovative design solutions that can replace or significantly improve the present-day turbomachinery designs. The concepts of contra-rotation and tandem blade configuration are two different methods of achieving better performance. Though several independent studies have been carried out on the concepts of contrarotation and tandem blade configuration, a combination of both these techniques to achieve better performance is a thought unexplored. Therefore, the present work explores the applicability of tandem blading in a low-speed contra-rotating fan. The idea is to replace the front rotor of the contra-rotating fan stage with tandem blades. Several combinations of percent pitch for the tandem arrangement are analyzed to obtain the best configuration suitable for the case. The performance of the baseline contra-rotating fan is established numerically. A detailed numerical investigation of the flow physics associated with the contrarotating stage reveals some interesting phenomena affecting its performance. A comparison of the performance of tandem configuration with that of the baseline is carried out. The interaction of gap flow and the wake of the front blade with the tip-leakage flow of the rear blade of the tandem configuration is analyzed in detail. The performance of the stage is evaluated through stage loading or pressure rise and the stability margin.

Copyright © 2018 by ASME

Figures

Tables

Interactive Graphics

Video

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

NOTE:
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