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Keywords: large eddy simulation
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Proceedings Papers
Proc. ASME. GT2022, Volume 10A: Turbomachinery — Axial Flow Fan and Compressor Aerodynamics, V10AT29A009, June 13–17, 2022
Paper No: GT2022-80538
... a large-eddy-simulation (LES) study of a three-dimensional open rotor fan blade at realistic conditions. Specifically, we focus in this paper on takeoff conditions, run at a Reynolds number representative of a subscale rig typically used for aeroacoustic technology maturation testing, to explore the flow...
Proceedings Papers
Proc. ASME. GT2022, Volume 3A: Combustion, Fuels, and Emissions, V03AT04A030, June 13–17, 2022
Paper No: GT2022-80993
..., a computational study was carried out. Large Eddy Simulations (LES) coupled with an algebraic volume-of-fluid (VOF) approach were performed to model a liquid water jet interacting with a subsonic crossflow and subsequently impinging on an aluminum plate. For the condition studied, a grid convergence study...
Proceedings Papers
Bernhard Stiehl, Marcel Otto, Malcolm Newmyer, Max Fortin, Tommy Genova, Kareem Ahmed, Jayanta Kapat, Stefano Orsino, Carlo Arguinzoni
Proc. ASME. GT2022, Volume 3B: Combustion, Fuels, and Emissions, V03BT04A050, June 13–17, 2022
Paper No: GT2022-83343
... be a promising strategy to utilize existing turbine combustors, while retaining reaction timescales close to those of CH 4 -powered systems. fuels NO x pollutant emissions lean combustion gas turbine combustor fuel jet injector large eddy simulation Proceedings of ASME Turbo Expo 2022...
Proceedings Papers
Proc. ASME. GT2022, Volume 1: Aircraft Engine; Ceramics and Ceramic Composites, V001T01A019, June 13–17, 2022
Paper No: GT2022-81955
... on the basis of the Parker experimental model. A method combined the large eddy simulation used to process the flow field and the Lighthill acoustic analog used to capture the acoustic characteristics of the acoustic calculation model is proposed. The obtained sound pressure spectrum curves are highly...
Proceedings Papers
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT14A004, June 13–17, 2022
Paper No: GT2022-81338
... Abstract Flow and heat transfer in axial compressor disc cavities involve strong interaction of axial throughflow at the disc bores with centrifugal buoyant flow in the cavities. This paper presents large eddy simulation (LES) of flow and heat transfer in rotating cavities with a heated shroud...
Proceedings Papers
Proc. ASME. GT2022, Volume 6B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, V06BT13A011, June 13–17, 2022
Paper No: GT2022-82353
... Abstract In the present study, the discretizing and synthesizing random flow generation (DSRFG) technique was used to generate three-dimensional instantaneous inflow turbulence with predefined characteristics according to the real turbulence energy spectrum. A large eddy simulation (LES...
Proceedings Papers
Large Eddy Simulation of the 7-7-7 Shaped Film Cooling Hole at Axial and Compound Angle Orientations
Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A016, September 21–25, 2020
Paper No: GT2020-14439
... streamwise vortex that changes the lateral distribution of coolant, relative to the pair of vortices that develop from an axially oriented film cooling hole. In this study, Large Eddy Simulation (LES) using the Wall-Adapting Local Eddy Viscosity (WALE) model was performed on the publicly available 7-7-7...
Proceedings Papers
Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A019, September 21–25, 2020
Paper No: GT2020-14525
... Abstract This study numerically investigates the influences of cooling hole surface roughness in a laidback fan-shaped hole on the flow structure and film-cooling effectiveness. The three-dimensional compressible LES approach (large eddy simulation) is conducted in a baseline 7-7-7 laidback fan...
Proceedings Papers
Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A062, September 21–25, 2020
Paper No: GT2020-15830
... Abstract Large eddy simulations on well-known 7-7-7 fan shaped cooling hole have been carried out. Film cooling methods are generally applied to high pressure turbine, of which flow condition is extremely turbulent because high pressure turbines are generally located downstream combustor in gas...
Proceedings Papers
Proc. ASME. GT2020, Volume 2A: Turbomachinery, V02AT32A045, September 21–25, 2020
Paper No: GT2020-15180
... in a compressor cascade with tip clearance in the present paper. Large eddy simulation was used to better resolve the vortices with more accurate numerical results. The iso-surface of Q criterion in the compressor cascade is captured for recognizing and analyzing the vortex structures. The horse shoe vortices...
Proceedings Papers
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A023, September 21–25, 2020
Paper No: GT2020-14809
... Abstract The turbulent flow in a compressor cascade is calculated by using a new simulation method, i.e., parameter extension simulation (PES). It is defined as the calculation of a turbulent flow with the help of a reference solution. A special large-eddy simulation (LES) method is developed...
Proceedings Papers
Proc. ASME. GT2020, Volume 2C: Turbomachinery, V02CT35A011, September 21–25, 2020
Paper No: GT2020-14554
... Abstract Large Eddy Simulation (LES) has already been widely applied for unsteady flow simulations (e.g., axial cascade simulation), showing its superiority in the case of turbulent flow fields. However, there are several obstacles in the practical use of LES as a cascade design tool for gas...
Proceedings Papers
Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 213-222, June 14–18, 2010
Paper No: GT2010-22572
... ratio (H/d) (1 to 8), and jet Reynolds number (12878 to 25750) are varied. Computations are carried out by using large eddy simulation (LES) with Smagorinsky-Lilly sub grid scale modeling. Excellent agreement is obtained between the computational and the experimental data. The computationally obtained...
Proceedings Papers
Proc. ASME. GT2009, Volume 2: Combustion, Fuels and Emissions, 951-968, June 8–12, 2009
Paper No: GT2009-60230
... 23 02 2010 An unconfined strongly swirled flow is investigated for different Reynolds numbers using particle image velocimetry (PIV) and Large Eddy Simulation (LES) with a Thickened Flame (TF) model. Both reacting and non-reacting flow results are presented. In the LES-TF approach...
Proceedings Papers
Proc. ASME. GT2008, Volume 3: Combustion, Fuels and Emissions, Parts A and B, 1021-1034, June 9–13, 2008
Paper No: GT2008-51320
... 04 08 2009 A Thickened Flame (TF) modeling approach is combined with a Large Eddy Simulation (LES) methodology to model premixed combustion and the accuracy of these model predictions is evaluated by comparing with the piloted premixed stoichiometric methane-air flame data of Chen et...
Proceedings Papers
Proc. ASME. GT2005, Volume 2: Turbo Expo 2005, 721-728, June 6–9, 2005
Paper No: GT2005-69010
... 03 11 2008 The present paper describes a study that is aimed at establishing and quantifying the benefits of the Large Eddy Simulation (LES) method for predicting scalar turbulent transport in a combustor relevant jet-mixing problem. A non-reacting co-annular jet mixing configuration...