Numerical simulation of compressible mixing layers
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Numerical simulation of compressible mixing layers.

Numerical simulation of compressible mixing layers ...

Oct 01, 2006  Three-dimensional spatially developing compressible planar mixing layers are studied numerically for convective Mach number M c = 0.4, 0.8 and 1.2. The present results for the flow-field structures, the mean velocity profiles, the mixing-layer growth rate and Reynolds stresses agree well with those of experiments and other numerical studies.

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Numerical Simulation of Compressible Mixing Layers ...

Jan 01, 2005  Three-dimensional spatially developing compressible planar mixing layers are studied numerically for convective Mach number Mc = 0.4, 0.8 and 1.2.The present results for the flow-field structure, the mean velocity profiles, the mixing-layer growth rate, and Reynolds stresses agree well with those of experiments and other numerical studies.

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Numerical Simulation of Compressible Mixing Layers ...

Request PDF Numerical Simulation of Compressible Mixing Layers Three-dimensional spatially developing compressible planar mixing layers are studied numerically for convective Mach number Mc ...

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Numerical Simulations of Compressible Mixing Layers ...

10%  Direct numerical simulations of two-dimensional temporally growing compressible mixing layers are presented. The Kelvin-Helmholtz instability is initially excited by a white-noise perturbation superimposed onto a hyperbolic tangent meanflow profile. The linear regime is studied at low resolution in the case of two flows of equal temperatures ...

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Numerical simulation of the compressible mixing layer past ...

Oct 30, 2007  Numerical simulation of a compressible mixing layer past an axisymmetric trailing edge is carried out for a Reynolds number based on the diameter of the trailing edge approximately equal to 2.9 × 10 6.The free-stream Mach number at separation is equal to 2.46, which corresponds to experiments and leads to high levels of compressibility.

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A numerical simulation of compressible mixing layers

21ème Congrès Français de Mécanique Bordeaux, 26 au 30 août 2013 1 A numerical simulation of compressible mixing layers H. KHLIFI a, T. LILI b a. (IPEIB),Laboratoire de Mécanique des Fluides, Faculté des Sciences de Tunis.

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Numerical Study of Compressible Mixing Layers Using High ...

Oct 30, 2010  10%  This paper reports high resolution simulations using fifth-order weighted essentially non-oscillatory (WENO) schemes with a third-order TVD Runge-Kutta method to examine the features of turbulent mixing layers. The implementation of high-order WENO schemes for multi-species non-reacting Navier-Stokes (NS) solver has been validated through selective test problems. A

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Simulation and Modeling of Compressible Turbulent Mixing Layer

Direct numerical simulations (DNS) of compressible turbulent mixing layer are performed for subsonic to supersonic Mach numbers. Each simulation achieves the self-similar state and it is shown that the turbulent statistics during this state agree well with previous numerical and experimental works.

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(PDF) Direct numerical simulation of compressible ...

ible mixing layer and the significance of inflo w turbulence, in 55th AIAA Aer ospace Scienc es Meeting (2017) p. 0316. [18] A. W. Vreman, N. Sandham, and K. Luo, Compressible mixing lay er ...

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Compressible mixing layer - Linear theory and direct ...

May 17, 2012  Direct numerical simulation of vortex structures during the late stage of the transition process in a compressible mixing layer Physics of Fluids, Vol. 33, No. 5 Influence of Knudsen and Mach numbers on Kelvin-Helmholtz instability

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Numerical Simulations of Compressible Mixing Layers ...

Direct numerical simulations of two-dimensional temporally growing compressible mixing layers are presented. The Kelvin-Helmholtz instability is initially excited by a white-noise perturbation superimposed onto a hyperbolic tangent meanflow profile. The linear regime is studied at low resolution in the case of two flows of equal temperatures ...

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Numerical simulations of compressible mixing layers - NASA ...

Direct numerical simulations of two-dimensional temporally growing compressible mixing layers are presented. The Kelvin-Helmholtz instability is initially excited by a white-noise perturbation superimposed onto a hyperbolic tangent meanflow profile. The linear regime is studied at low resolution in the case of two flows of equal temperatures, for convective Mach numbers from 0.1 to 1 and for ...

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Numerical Simulations of Spatially Developing Mixing Layers

Turbulent mixing layers have been researched for many years. Currently, research is focused on studying compressible mixing layers because of their widespread applications in high-speed flight systems. While the effect of compressibility on the shear layer growth rate is well established, there is a lack of consensus over its effect on the turbulent stresses and hence warrants additional ...

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Numerical Study of Compressible Mixing Layers Using High ...

Oct 30, 2010  This paper reports high resolution simulations using fifth-order weighted essentially non-oscillatory (WENO) schemes with a third-order TVD Runge-Kutta method to examine the features of turbulent mixing layers. The implementation of high-order WENO schemes for multi-species non-reacting Navier-Stokes (NS) solver has been validated through selective test problems.

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Numerical simulation of a compressible shear layer - NASA/ADS

The nonlinear development of two-dimensional supersonic instability waves in a mixing layer is investigated by solving the full unsteady Navier-Stokes equations. A finite difference predictor-corrector explicit method is used. The method is second-order accurate in time and fourth-order accurate in space. Both confined and unconfined shear layers are simulated. For a fast or a slow mode of ...

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[PDF] Numerical Investigation of Shocks in Compressible ...

In this paper, the results of three-dimensional numerical simulation of compressible turbulent temporal mixing layers are presented for a high Mach number (M=1.4) using Large Eddy Simulation (LES). The purpose of this study is developing LES in compressible turbulent temporal mixing layers in supersonic flows. Initially, we derive the filtered Navier-Stokes equations using the top-hat ...

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(PDF) Direct numerical simulation of compressible ...

ible mixing layer and the significance of inflo w turbulence, in 55th AIAA Aer ospace Scienc es Meeting (2017) p. 0316. [18] A. W. Vreman, N. Sandham, and K. Luo, Compressible mixing lay er ...

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Direct numerical simulation of a three-dimensional ...

Aug 22, 2019  Dai, T. Jin, K. Luo, and J. Fan, “ Direct numerical simulation of a three-dimensional spatially evolving compressible mixing layer laden with particles. I. I. Turbulent structures and asymmetric properties ,” Phys. Fluids 31 , 083302 (2019).

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Compressible mixing layer growth rate and turbulence ...

Direct numerical simulations The temporal mixing layer with equal and opposite free-stream velocities has been simulated by direct numerical simulation of the compressible Navier-Stokes equations. The database covers four different convective Mach numbers: M = 0.2, 0.6, 0.8 and 1.2.

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Direct numerical simulation of developed compressible

Direct numerical simulation of developed compressible flow in square ducts Davide Modesti1,2, Sergio Pirozzoli3 and Francesco Grasso1 1Cnam-Laboratoire DynFluid, 151 Boulevard de L’Hopital, 75013 Paris 2Department of Mechanical Engineering, The University of Melbourne, Victoria 3010,Australia 3Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, via

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Numerical simulation of excited jet mixing layers - NASA/ADS

A numerical simulation of unsteady flow in jet mixing layers, both with and without external excitation, has been performed by solving the time-dependent compressible Navier-Stokes equations. Computations were performed on a CRAY X-MP computer using MacCormick's explicit finite difference algorithm. Different excitation methods were investigated and were shown to be very effective in ...

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Direct numerical simulation of spatially developing ...

Direct numerical simulation databases have been used to study the effect of compressibility on mixing layers. The simulations cover convective Mach numbers from 0.2 to 1.2 and all contain a fully ...

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Numerical simulation of excited jet mixing layers - NASA ...

A numerical simulation of unsteady flow in jet mixing layers, both with and without external excitation, has been performed by solving the time-dependent compressible Navier-Stokes equations. Computations were performed on a CRAY X-MP computer using MacCormick's explicit finite difference algorithm. Different excitation methods were investigated and were shown to be very effective in ...

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A Numerical Investigation of the Compressible Mixing Layer

The effect of Mach number on the plane mixing layer has been investigated by means of linear stability theory and two and three dimensional direct numerical simulations of the compressible Navier Stokes equations. The objective was to identify the effects of compressibility on a building block fluid flow, with applications to supersonic mixing and combustion.

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Numerical simulations of compressible mixing layers ...

Direct numerical simulations of two-dimensional temporally growing compressible mixing layers are presented. The Kelvin-Helmholtz instability is initially excited by a white-noise perturbation superimposed onto a hyperbolic tangent meanflow profile. The linear regime is studied at low resolution in the case of two flows of equal temperatures, for convective Mach numbers from 0.1 to 1 and for ...

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Numerical simulations of compressible and reacting ...

Numerical simulations of temporally evolving compressible inert and reacting mixing layers are performed. The results are examined in terms of modeling techniques for transport and reaction in compressible, turbulent mixing layers.

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Numerical simulation of excited jet mixing layers - NASA ...

A numerical simulation of unsteady flow in jet mixing layers, both with and without external excitation, has been performed by solving the time-dependent compressible Navier-Stokes equations. Computations were performed on a CRAY X-MP computer using MacCormick's explicit finite difference algorithm. Different excitation methods were investigated and were shown to be very effective in ...

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Behaviour analysis of numerical solutions and simulation ...

of numerical solutions; compressible mixing layers. 1. Introduction Numerical characteristics of simulated unsteady flow fields remain largely unclear as yet, and have to be studied for correct simulation of this kind of flows, such as turbulent flows.

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(PDF) Direct numerical simulation of compressible ...

ible mixing layer and the significance of inflo w turbulence, in 55th AIAA Aer ospace Scienc es Meeting (2017) p. 0316. [18] A. W. Vreman, N. Sandham, and K. Luo, Compressible mixing lay er ...

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A Numerical Investigation of the Compressible Mixing Layer

The effect of Mach number on the plane mixing layer has been investigated by means of linear stability theory and two and three dimensional direct numerical simulations of the compressible Navier Stokes equations. The objective was to identify the effects of compressibility on a building block fluid flow, with applications to supersonic mixing and combustion.

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Compressible mixing layer growth rate and turbulence ...

Direct numerical simulations The temporal mixing layer with equal and opposite free-stream velocities has been simulated by direct numerical simulation of the compressible Navier-Stokes equations. The database covers four different convective Mach numbers: M = 0.2, 0.6, 0.8 and 1.2.

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Numerical simulation of particle dispersion in the ...

conducted [1, 2] in area of compressible free shear layers, where it was demonstrated that the growth rate of mixing layer decreases with increase of the convective Mach number. Numerically, turbulent mixing layers have been successfully studied for the wide range of the convective Mach numbers for subsonic [3, 4] and supersonic [5, 6] flows.

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Numerical Simulation of Compressible Reactive Flows ...

Oct 22, 2015  Numerical simulation has been widely employed to investigate the compressible flows since it is difficult to carry out the experimental measurements, especially in the reactive flows. The shock-wave capturing scheme will be necessary for resolving the compressible flows, and moreover the careful treatments of chemical reaction should be considered for proceeding numerical simulation

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Direct numerical simulation of developed compressible

Direct numerical simulation of developed compressible flow in square ducts Davide Modesti1,2, Sergio Pirozzoli3 and Francesco Grasso1 1Cnam-Laboratoire DynFluid, 151 Boulevard de L’Hopital, 75013 Paris 2Department of Mechanical Engineering, The University of Melbourne, Victoria 3010,Australia 3Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, via

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Numerical simulation of the compressible mixing layer past ...

Numerical simulation of the compressible mixing layer past an axisymmetric trailing edge. Journal of Fluid Mechanics, 2007. Philippe Guillen. Franck Simon. S. Deck. Alain Merlen. P. Sagaut. ... Numerical simulation of the compressible mixing layer past an axisymmetric trailing edge. Download.

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Numerical modeling and simulation of compressible reacting ...

Abstract. Numerical modeling and simulation of compressible reacting turbulent shear layers are considered. In the numerical modeling portion of this work, improved turbulent transport models for compressible shear layers are presented and validated with detailed experimental data.

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Numerical Simulation of Particle Dispersion in a Spatially ...

Snyderand Lumley (1971) on the turbulentmixing layer, many experimentshavebeen conducted(e.g. Weis-brot and Wygnanski, 1988; Wygnanski and Weisbrot, 1988) to study the coherent structures and especially the pairing processes of plane mixing layers. Direct Numerical Simulation (DNS) is a relatively new tool

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NASA Compressible Shear Layer Facility and Experimental ...

Jan 05, 2021  Recently, there has been an influx of high quality computational analyses such as large-eddy simulation (LES) and detached-eddy simulation (DES) that have improved numerical predictions of the flow physics of high-speed, compressible mixing layers.

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