TY - JOUR
T1 - Large eddy simulation for turbines
T2 - Methodologies, cost and future outlooks
AU - Tyacke, James
AU - Tucker, Paul G.
AU - Jefferson-Loveday, Richard
AU - Vadlamani, Nagabushana Rao
AU - Watson, Robert
AU - Naqavi, Iftekhar
AU - Yang, Xiaoyu
PY - 2013/11/19
Y1 - 2013/11/19
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85014049245&partnerID=8YFLogxK
U2 - 10.1115/1.4025589
DO - 10.1115/1.4025589
M3 - Article
AN - SCOPUS:85014049245
SN - 0889-504X
VL - 136
JO - Journal of Turbomachinery
JF - Journal of Turbomachinery
IS - 6
M1 - 061009
ER -