Results 141 to 150 of about 11,201 (183)
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Investigation of a compressible turbulent mixing layer using a hybrid RANS/LES method
15th AIAA Computational Fluid Dynamics Conference, 2001A turbulent mixing layer formed by two supersonic streams is investigated using a new hybrid computational method. The hybrid method uses a Reynolds-averaged NavierStokes (RANS) approach for wall bounded regions and a large-eddy simulation (LES) approach for the turbulent mixing region.
Nicholas Georgiadis +3 more
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Assessment of Turbulence Length Scales in Hybrid RANS-LES Methods
2017Separated flows are common in many scenarios of practical interest. Key examples of these scenarios include static stall over fixed wing aircraft and dynamic stall over rotorcraft blades. During rotor operation at high advance ratio, the stall events lead to loss in performance of the rotorcraft and may cause severe aerodynamic loads.
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A hybrid RANS-LES Cartesian method based on a skew-symmetric convective operator
Journal of Computational Physics, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Francesco Capizzano +3 more
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Application of a Hybrid RANS-LES Method to Free Shear Layers
Volume 7: Fluids Engineering, 2019Abstract This paper presents the application of the XLES (eXtra Large Eddy Simulation) method to relevant test-cases. The mixing between two boundary layers and between a wake and a boundary layer are discussed. The first test case considers the mixing layer that forms at the end of a splitting plate.
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Computational Investigation of a Swirled Premixed Burner Using Hybrid RANS-LES Method
2018High turbulent swirling reacting flow is investigated in a swirled premixed burner using hybrid RANS-LES method. The hybrid method is the Detached Eddy Simulation (DES) and it is combined with the Finite-Rate/Eddy Dissipation (FR/EDM) combustion model to treat turbulence-chemistry interaction.
Mansouri, Z. +3 more
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Cost-effective hybrid RANS-LES type method for jet turbulence and noise prediction
International Journal of Aeroacoustics, 2017Jets at higher Reynolds numbers have a high concentration of energy in small scales in the nozzle vicinity. This is challenging for large-eddy simulation, potentially placing severe demands on grid density. To circumvent this, we propose a novel procedure based on well-known Reynolds number (Re) independent of jets.
M Mahak, IZ Naqavi, PG Tucker
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Predictions of HVAB Rotor in Hover Using Hybrid RANS/LES Methods
AIAA Scitech 2021 Forum, 2021Qiuying Zhao, Chunhua Sheng
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Assessment of Hybrid RANS-LES Methods for Simulating Viscous Flows
AIAA SCITECH 2022 Forum, 2022Chunhua Sheng +2 more
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Verification of Length Scale Effects on Solution Accuracy of Hybrid RANS-LES Methods
Volume 2: CFD and VIV, 2016Hybrid RANS-LES methods are gaining popularity for the simulation of the complex bluff body flows at high Reynolds numbers due to their reduced computational cost and good accuracy. A number of such methods have been proposed in the literature. Each of these methods have enjoyed varying degree of success for different applications.
Kumar, Gaurav +4 more
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Evaluation of Hybrid RANS/LES Methods for Computing Flow over a Prolate Spheroid
2014The objective of the current study is towards comparative assessment of the performance of hybrid RANS/LES turbulence models in predicting flow over a 6:1 prolate spheroid. Two hybrid RANS/LES turbulence models formulated in seamless framework are assessed for their predictive capabilities in performing aerodynamic analysis of the prolate spheroid ...
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