Three Component LDV Velocity Measurements in a Can Type Research Combustor for CFD Validation: Part 1 — Isothermal FREE

[+] Author Affiliations
Saad A. Ahmed, Abdollah S. Nejad

Wright Laboratory, Wright-Patterson AFB, OH

Alan Rose

Rolls-Royce Inc., Dayton, OH

Paper No. 92-GT-138, pp. V003T06A030; 15 pages
  • ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Cologne, Germany, June 1–4, 1992
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7895-8
  • Copyright © 1992 by ASME


A two-component fibre optic LDV system has been employed to measure three mean velocity components and five Reynolds Stress components in a confined, isothermal strongly swirling flowfield. The primary objective is to provide complete benchmark data for comparisons with numerical predictions based on practical models for turbulent swirling flows and thereby guide the development of such models. Results of initial modelling work are presented and even at this early stage in the programme, the superiority of the Reynolds Stress modelling approach is clearly illustrated through comparisons with the results from experiment and a typical kε model. Measurements show the radial velocity component (close to the swirler exit) to be of the same magnitude as the axial and swirl components. Velocity measurements obtained close to the combustor wall should be treated with caution as these were most affected by signal noise as a result of internal wall reflections.

Copyright © 1992 by ASME
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