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Large Eddy Simulation for Turbines: Methodologies, Cost and Future Outlooks

Tyacke, J and Tucker, P and Jefferson-Loveday, R and Rao Vadlamani, N and Watson, R and Naqavi, I and Yang, X (2013) Large Eddy Simulation for Turbines: Methodologies, Cost and Future Outlooks. Journal of Turbomachinery, 136. 061009-061009. ISSN 0889-504X

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Abstract

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 RANS/URANS 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.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div A > Fluid Mechanics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:28
Last Modified: 10 Mar 2014 16:17
DOI: 10.1115/1.4025589

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