Comparison of Numerical Methods for the Prediction of Time-Averaged Flow Quantities in a Cooled Multistage Turbine

Conference Paper

An unsteady simulation of a two-stage, cooled, high pressure turbine cascade is achieved by applying the harmonic balance method, a mixed time domain and frequency domain computational fluid dynamic technique for efficiently solving periodic unsteady flows. A comparison of computed temperature and pressure profile predictions generated using the harmonic balance method and a conventional steady mixing plane analysis is presented. The predicted temperature and pressure profiles are also compared to experimental data at the stage exit plane. The harmonic balance solver is able to efficiently model unsteady flows caused by wake interaction and secondary flow effects due to cooling flows. It is demonstrated that modeling the unsteady effects is critical to the accurate prediction of time-averaged flow field quantities, particularly for cooled machines.

Duke Authors

Cited Authors

  • Hall, KC; Marpu, RP; Custer, CH; Venkataramanan, S; Weiss, JM

Published Date

  • June 15, 2015

Published In

  • Asme Turbo Expo 2015: Turbine Technical Conference and Exposition

Start / End Page

  • V02CT44A028 - V02CT44A028

Published By


  • 11

International Standard Book Number 13 (ISBN-13)

  • 978-0-7918-5665-9

Conference Name

  • ASME Turbo Expo 2015: Turbine Technical Conference and Exposition

Conference Location

  • Montreal, Quebec, Canada

Conference Start Date

  • June 15, 2015

Conference End Date

  • June 19, 2015