scholarly journals Reliability of Large-Eddy Simulations: Benchmarking and Uncertainty Quantification

2017 ◽  
pp. 15-23 ◽  
Author(s):  
M. V. Salvetti ◽  
M. Meldi ◽  
L. Bruno ◽  
P. Sagaut
Keyword(s):  
Uncertainty Quantification ◽  
Large Eddy Simulations ◽  
Large Eddy

Uncertainty Quantification in Large Eddy Simulations of CMAS Attack and Deposition in Gas Turbine Engines

2021 ◽  
Author(s):  
Luis G. Bravo ◽  
Muthuvel Murugan ◽  
Anindya Ghoshal ◽  
Simon Su ◽  
Rahul Koneru ◽  
...  
Keyword(s):  
Uncertainty Quantification ◽  
Gas Turbine ◽  
Large Eddy Simulations ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Large Eddy

Uncertainty Quantification in Large Eddy Simulations of a Rich-Dome Aviation Gas Turbine

2017 ◽  
Author(s):  
Matthieu Masquelet ◽  
Jin Yan ◽  
Anne Dord ◽  
Gregory Laskowski ◽  
Lee Shunn ◽  
...  
Keyword(s):  
Uncertainty Quantification ◽  
Reacting Flows ◽  
Large Eddy Simulations ◽  
Inlet Temperature ◽  
Computational Domain ◽  
Exit Plane ◽  
Air Inlet ◽  
Large Eddy ◽  
Baseline Solution ◽  
Seed Points

In this work, a rich-dome aviation combustor operating over a range of high-power conditions is investigated using multiple Large Eddy Simulations (LES). The LES flow solutions are obtained with CharLES, a massively-parallel framework for compressible, reacting flows in complex geometries. The CharLES solver constructs a body-conforming mesh from the 3D Voronoi diagram of a set of regularly distributed seed points within the computational domain. The computational domain spans from the compressor exit plane to the combustor exit plane and includes the passages around the combustor liners. A baseline solution is first obtained at nominal conditions using a reference grid and validated using non-dimensional exit profile. Non-intrusive Uncertainty Quantification (UQ) is then employed to characterize the uncertainties on a few key combustor metrics. It is found that the overall variability at the exit plane is actually larger than the input uncertainty. This highlights the non-linear coupling between the flow and the reacting processes inside the combustor. Areas of high temperature variability are highlighted, especially downstream of the dilution holes. Finally, it is found that uncertainty in fuel flowrate has a greater impact on outlet quantities whereas uncertainty in air inlet temperature has a greater impact on liner quantities.

Automotive Flow and Acoustic Predictions using Large Eddy Simulations

2012 ◽  
Vol 39 (3) ◽  
pp. 272-289 ◽  
Author(s):  
Bahram Khalighi ◽  
Gianluca Iaccarino ◽  
Yaser Khalighi
Keyword(s):  
Large Eddy Simulations ◽  
Large Eddy

Large-eddy simulations and lidar measurements of vortex-pair breakup in aircraft wakes

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 1439-1445 ◽  
Author(s):  
D. C. Lewellen ◽  
W. S. Lewellen ◽  
L. R. Poole ◽  
C. A. Hostetler ◽  
R. J. DeCoursey ◽  
...  
Keyword(s):  
Vortex Pair ◽  
Large Eddy Simulations ◽  
Large Eddy ◽  
Lidar Measurements

Large eddy simulations of sound radiation from subsonic turbulent jets

AIAA Journal ◽  
2001 ◽  
Vol 39 ◽  
pp. 1469-1477
Author(s):  
W. Zhao ◽  
S. H. Frankel ◽  
L. Mongeau
Keyword(s):  
Sound Radiation ◽  
Turbulent Jets ◽  
Large Eddy Simulations ◽  
Large Eddy
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