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Large Eddy Simulation and Direct Numerical Simulation of Non reactive Turbulent Flows

MicroHH 1.0: a computational fluid dynamics code for direct numerical simulation and large-eddy simulation of atmospheric boundary layer flows

MicroHH 1.0: a computational fluid dynamics code for direct numerical simulation and large-eddy simulation of atmospheric boundary layer flows

... the simulation of turbulent flows in doubly periodic domains, with a focus on those in the ...the direct numerical simulation (DNS) technique but also sup- ports the ...

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Rayleigh-Taylor mixing : Direct numerical simulation and implicit large eddy simulation

Rayleigh-Taylor mixing : Direct numerical simulation and implicit large eddy simulation

... high-resolution large eddy simulation is the most computationally efficient way of cal- culating the high-Re behavior and that this approximation is needed for the more complex situa- tions in which ...

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Large Eddy Simulation of Turbulent Incompressible Flow Using GPU with Multigrid Algorithm

Large Eddy Simulation of Turbulent Incompressible Flow Using GPU with Multigrid Algorithm

... In Large Eddy Simulation large eddies are resolved and small eddies are ...the large-scale eddies depends strongly on the forces acting on the flow and on ini- tial and boundary ...

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Direct numerical simulation of a turbulent flow over an axisymmetric hill

Direct numerical simulation of a turbulent flow over an axisymmetric hill

... numerous numerical investigations have been carried out by various researchers using Reynolds-averaged Navier–Stokes (RANS) or large-eddy simulation (LES) approaches at either full or reduced ...

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Large Eddy Simulation of the Flat Plate Turbulent Boundary Layer at High Reynolds Numbers

Large Eddy Simulation of the Flat Plate Turbulent Boundary Layer at High Reynolds Numbers

... moderately large Reynolds number but do not appear to have yet been used to systematically study the spatially-developing, zero-pressure gradient boundary layer at either large laboratory Reynolds numbers ( ...

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Direct numerical simulation of supersonic turbulent flows around a tandem expansion compression corner

Direct numerical simulation of supersonic turbulent flows around a tandem expansion compression corner

... combining numerical simulations and experimental ...the non-equilibrium region of the flow, where the separation and reattachment points were over- ...speed flows is quite limited, due to the ...

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Large eddy simulation of microbubble transport in a turbulent horizontal channel flow

Large eddy simulation of microbubble transport in a turbulent horizontal channel flow

... But in many practical applications (Wörner, 2012), the Reynolds number is considerably higher and bubbles at high enough Reynolds numbers rise unsteadily, either wobbling as they rise or rising along a spiral path. The ...

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Large eddy simulation of shock wave/turbulent boundary layer interaction with and without SparkJet control

Large eddy simulation of shock wave/turbulent boundary layer interaction with and without SparkJet control

... particular, direct numerical simulation (DNS) and large-eddy simulation (LES) become essential research tools for fundamental in-depth flow mechanism ...a turbulent flow ...

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Investigation of low dissipation monotonicity preserving scheme for direct numerical simulation of compressible turbulent flows

Investigation of low dissipation monotonicity preserving scheme for direct numerical simulation of compressible turbulent flows

... LT. Large eddy simulation of subsonic and supersonic channel flow at moderate Reynolds ...for Numerical Methods in ...Background: Large-Eddy ...editors. Large-Eddy ...

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Large eddy simulation of transonic turbulent flow over a bump

Large eddy simulation of transonic turbulent flow over a bump

... Transonic turbulent boundary-layer flow over a circular-arc bump has been computed by high-resolution large-eddy simulation of the compressible Navier–Stokes ...standard turbulent ...

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Large eddy simulation of accelerated turbulent flow in a circular pipe

Large eddy simulation of accelerated turbulent flow in a circular pipe

... transient turbulent flow with temporal pressure gradient are relatively ...A direct numerical simulation (DNS) of a decelerated turbulent channel flow subjected to a sudden change of ...

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Large Eddy Simulation of Deposition of Anisotropic Particles in a Turbulent Channel Flow

Large Eddy Simulation of Deposition of Anisotropic Particles in a Turbulent Channel Flow

... of large particles close to the walls in regime 3 (Sun et al, ...from direct numerical simulation (DNS) (Ounis et al, 1993; Zhang and Ahmadi, 2000; Zhang et al, 2001) or large ...

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Shear-improved Smagorinsky model for large-eddy simulation of wall-bounded turbulent flows

Shear-improved Smagorinsky model for large-eddy simulation of wall-bounded turbulent flows

... Turbulence near a boundary is highly anisotropic and subject to strong shear effects. The customary theoretical background for representing the unresolved small-scale dynamics should be extended. A more general approach ...

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Large-eddy Simulation of Turbulent Boundary Layers with Spatially Varying Roughness

Large-eddy Simulation of Turbulent Boundary Layers with Spatially Varying Roughness

... rough-walled turbulent boundary layer with sand-grain roughness length-scale k s = αx that varies linearly with streamwise distance is first developed, with α a dimensionless ...For large Re x and a ...

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Implicit large eddy simulation of acoustic loading in supersonic turbulent boundary layers

Implicit large eddy simulation of acoustic loading in supersonic turbulent boundary layers

... Although numerical methods based on DNS offer the necessary high fidelity, they impose strict spatial resolution constraints that lead to very high computational ...classical Large Eddy ...

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Large Eddy & Interface Simulation (LEIS) of disturbance waves and heat transfer in annular flows

Large Eddy & Interface Simulation (LEIS) of disturbance waves and heat transfer in annular flows

... turbulence simulation technique (e.g. Large Eddy Simulation) was employed to capture dominant turbulence and interfacial ...a direct phase change model was employed to predict the mass ...

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Implicit large eddy simulation of weakly-compressible turbulent channel flow

Implicit large eddy simulation of weakly-compressible turbulent channel flow

... of turbulent channel flows using DNS, classical LES and DES, ILES investigations are still limited in number ...compressible turbulent channel ...popular numerical schemes, originally designed ...

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An investigation of turbulent steady streaming by large eddy simulation

An investigation of turbulent steady streaming by large eddy simulation

... Reciprocating flows are found in a wide variety of both engineering and natural set- ...in large vascular arteries, it is not surprising that a good deal of atten- tion has been paid to oscillatory ...

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Large Eddy Simulation of Spatially Developing Turbulent Reacting Shear Layers with the One-Dimensional Turbulence Model

Large Eddy Simulation of Spatially Developing Turbulent Reacting Shear Layers with the One-Dimensional Turbulence Model

... practical flows as they occur in science and ...developing turbulent reac- tive shear layer is chosen, such that a model extension from decaying (highly unsteady) homogeneous isotropic turbulent ...

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Implicit large eddy simulation of acoustic loading in supersonic turbulent boundary layers

Implicit large eddy simulation of acoustic loading in supersonic turbulent boundary layers

... Although numerical methods based on DNS offer the necessary high fidelity, they impose strict spatial resolution constraints that lead to very high computational ...classical Large Eddy ...

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