Results 151 to 160 of about 13,803 (197)
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Hybrid RANS/LES for active flow control
Aircraft Engineering and Aerospace Technology, 2014Purpose – The purpose of this article is to present numerical investigations of flow control with piezoelectric actuators on a backward facing step (BFS) and fluidic vortex generators on a NACA0015 aerofoil for the reattachment and separation control through the manipulation of the Reynolds stresses.
Wei Wang, Spiridon Siouris, Ning Qin
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Computation of the flow in a ventilated room using non-linear RANS, LES and hybrid RANS/LES
International Journal for Numerical Methods in Fluids, 2005Summary: The isothermal flow in an empty ventilated room is computed. Performances of linear and nonlinear RANS, LES and a hybrid RANS/LES (LNS) models are compared. When compared to linear equivalents, the nonlinear RANS models are found to modestly improve predicted velocities and Reynolds stresses.
Jouvray, Alexandre, Tucker, Paul G.
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Properties of the hybrid RANS/LES filter
Theoretical and Computational Fluid Dynamics, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Hybrid RANS-LES Turbulence Models on Unstructured Grids
38th Fluid Dynamics Conference and Exhibit, 2008ow eld in an unstructured legacy RANS computational uid dynamics code. The hybrid method consists of a blending of the k ! SST RANS model with a one-equation LES model for the subgrid-scale turbulent kinetic energy (k sgs ). Unstructured grids provide better resolution of complex geometries which is the motivation for extending this method ...
Eric Lynch, Marilyn Smith
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Hybrid RANS/LES Simulations of a Three-Element Airfoil
2012In this paper the Spalart-Allmaras based Delayed Detached Eddy Simulation (DDES [1]) and Improved Delayed Detached Eddy Simulation (IDDES [2]) are used to simulate the flow about an industrially relevant airfoil-configuration with deployed high-lift devices.
Reuß, Silvia +2 more
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Hybrid RANS-LES Modeling for Cavity Aeroacoutics Predictions
International Journal of Aeroacoustics, 2003A new hybrid RANS-LES turbulence modeling approach suited for modeling cavity aeroacoustics is presented. The model combines a one-equation LES subgrid model and a two equation RANS turbulence model in a physically consistent manner. The model takes into account the extent of resolution of the flow features by the mesh and computes an eddy viscosity ...
Srinivasan Arunajatesan, Neeraj Sinha
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One-Equation RG Hybrid RANS/LES Modelling
2008A one-equation variant of a previously developed two-equation, renormalization group (RG) based, hybrid RANS/LES model is presented. The model has a transport equation for the mean dissipation rate and an algebraically prescribed length scale. The length scale is proportional to the wall distance in RANS regions of the flow and to the filter width in ...
C. Langhe +3 more
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Two-Velocities Hybrid RANS-LES of a Trailing Edge Flow
2009The flow around a trailing edge is computed with a new hybrid method designed to split the influences of the averaged and instantaneous velocity fields. The model is first tested on channel flows at different Reynolds numbers and coarse meshes giving good predictions of mean velocities and stresses.
Uribe, J +3 more
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Hybrid RANS-LES Methods with Continuous Mode Variation
2020The most convenient way to overcome the cost issue of large eddy simulation (LES) for high Reynolds number (Re) turbulent wall flows and the reliability problem of Reynolds-averaged Navier–Stokes (RANS) equations is the development of hybrid RANS-LES methods (Frohlich et al. in Prog. Aerosp. Sci.
S. Heinz +2 more
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A Hybrid RANS/LES Simulation of Turbulent Channel Flow
Theoretical and Computational Fluid Dynamics, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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