Large eddy simulation for turbines: Methodologies, cost and future outlooks

James Tyacke*, Paul G. Tucker, Richard Jefferson-Loveday, Nagabushana Rao Vadlamani, Robert Watson, Iftekhar Naqavi, Xiaoyu Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)


Flows throughout different zones of turbines have been investigated using large eddy simulation (LES) and hybrid Reynolds-averaged Navier-Stokes-LES (RANS-LES) methods and contrasted with RANS modeling, which is more typically used in the design environment. The studied cases include low and high-pressure turbine cascades, real surface roughness effects, internal cooling ducts, trailing edge cut-backs, and labyrinth and rim seals. Evidence is presented that shows that LES and hybrid RANS-LES produces higher quality data than RANSIURANS for a wide range of flows. The higher level of physics that is resolved allows for greater flow physics insight, which is valuable for improving designs and refining lower order models. Turbine zones are categorized by flow type to assist in choosing the appropriate eddy resolving method and to estimate the computational cost.

Original languageEnglish
Article number061009
JournalJournal of Turbomachinery
Issue number6
Publication statusPublished - 19 Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering


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