... data shows overall a good agreement, especially for the total pressure losses in the wake, but also reveals uncertainties related to the reproduction of an experiment in the numerical model. large eddy simulation discontinuous Galerkin spectral element method unsteady wakes Proceedings...

... decomposition techniques. large eddy simulation discontinuous Galerkin spectral element method corner separation unsteady wakes Proceedings of ASME Turbo Expo 2023 Turbomachinery Technical Conference and Exposition GT2023 June 26-30, 2023, Boston, Massachusetts, USA GT2023-101374 A NUMERICAL TEST...

.... To this end, we conduct implicit large-eddy simulations of a high-pressure turbine cascade from public literature and a transonic compressor cascade measured at the German Aerospace Center, both at a high Reynolds number above 10 6 . Based on the results, we examine modal-energy and flow-feature based shock...

... mechanisms in such configurations is necessary. This study sheds light on the main noise components of a cold jet exhausting an aerospike nozzle. Implicit Large Eddy Simulations (ILES) are deployed to simulate the flow of the cold aerospike at a Nozzle Pressure Ratio (NPR) = 3. For far-field acoustic...

.... These analyses give a unique insight into the self-exciting mechanism of the shock oscillation and form the basis for the applicability of combined experimental and LES data set for a deeper analysis of the mechanism in future studies. shock-boundary layer interaction large eddy simulation transonic...

... = 0.13. The experimental study was conducted with Reynolds (Re) numbers ranging from 9,000 to 50,000. A computational study was conducted with the Large Eddy Simulation (LES) technique. The final judgment was completed based on the cooling channel’s heat transfer coefficient, friction factor, and thermal...

... temperature is defined based on these two quantities to examine the influence of differential diffusion on the generation of entropy fluctuations. The generation of entropy waves is investigated by applying system identification (SI) to time series data obtained from a broadband forced large eddy simulation...

..., 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... to orifice diameter 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...