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Sunday, April 19, 2020 | History

2 edition of Toward the large-eddy simulations of compressible turbulent flows found in the catalog.

Toward the large-eddy simulations of compressible turbulent flows

Toward the large-eddy simulations of compressible turbulent flows

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Published by National Aeronautics and Space Administration, Langley Research Center, For sale by the National Technical Information Service in Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Compressible flow.,
  • Computational grids.,
  • Simulation.,
  • Turbulent flow.,
  • Vortices.

  • Edition Notes

    Other titlesToward the large eddy simulations of compressible turbulent flows.
    StatementG. Erlebacher ... [et al.].
    SeriesICASE report -- no. 87-20., NASA contractor report -- 178273., NASA contractor report -- NASA CR-178273.
    ContributionsErlebacher, Gordon, 1957-, Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18082779M

    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 Cited by: 1. Temporal large eddy simulations of turbulent viscoelastic drag reduction flows Phys. Flu (); / Large eddy simulation of magnetohydrodynamic turbulent channel flows with local subgrid-scale model based on. Experimental measurements of subgrid passive scalar anisotropy and universality --Simulation of the motion of particles in turbulent flow --On the accuracy of symmetry-preserving discretization --DNS of turbulent supersonic channel flow --LES of wall-bounded turbulence based on a 6th-order compact scheme --Large eddy simulations using the. In this paper, a large-eddy simulation (LES) technique, which has provided a powerful tool for studying the dynamics of turbulent flows, is utilized to investigate the compressible flow past a wavy cylinder and a corresponding circular cylinder.


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Toward the large-eddy simulations of compressible turbulent flows Download PDF EPUB FB2

New subgrid-scale models for the large-eddy simulation of compressible turbulent flows are developed based on the Favre-filtered equations of motion for an ideal gas.

Large-eddy simulation of compressible turbulent jhws respectively, where p is the mass density, v is the velocity vector, p is the thermodynamic pressure,u is the dynamic viscosity, h is the enthalpy, T is the absolute temperature, and K is the thermal conductivity.

The viscous stress vL1 and the viscous dissipation @ are defined by Cited by: Large Eddy Simulation (LES) of compressible flows is Toward the large-eddy simulations of compressible turbulent flows book a widely unexplored area of research.

The authors, whose books are considered the most relevant monographs in Toward the large-eddy simulations of compressible turbulent flows book field, provide the reader with a comprehensive state-of-the-art presentation of Cited by: COVID Resources.

Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle.

Toward the large-eddy simulation of compressible turbulent flows - Volume - G. Erlebacher, M. Hussaini, C. Speziale, T. ZangCited by: Large Eddy Simulation (LES) of compressible flows is still a widely unexplored area of research.

The authors, whose books are considered the most relevant monographs in this field, provide the reader with a comprehensive state-of-the-art presentation of.

LES of compressible flows with a minimum Mach number of without using preconditioning. In the large-eddy simulation of Pierce [87], Toward the large-eddy simulations of compressible turbulent flows book to reactingflows, a variable-density approach has been used to deal with the problem of compressibility at.

A recent presentation including modeling and simulation considerations is given in the book by Pope (Turbulent flows, ). Although the primary focus in this chapter is on the incompressible flows Toward the large-eddy simulations of compressible turbulent flows book Newtonian fluids, there has also been much effort directed toward high-speed flows and compressible turbulence and now, within the last decade.

A new computational scheme is developed for large eddy simulation (LES) of compressible turbulent reacting flows via the filtered density function (FDF) subgrid scale closure. out of 5 stars An atlas of large-eddy simulation Reviewed in the United States on June 2, This book presents the current status of Large-Eddy Simulation (LES) and is invaluable for anyone working on the by:   An efficient large-eddy simulation (LES) approach is investigated for laminar-to-turbulent transition in boundary layers.

This approach incorporates the boundary-layer stability theory. Primary instability and subharmonic perturbations determined by the boundary-layer stability theory are assigned as forcing at the inlet of the LES Cited by: 5.

In the present study, the ASIRK scheme is used to conduct large eddy simulation (LES) studies of low Mach number, wall-bounded turbulent flows based on integrating the compressible NSE. In the past few years, the application of LES to CAA problems has grown [1].Cited by: Large eddy simulation of compressible turbulence using high‐resolution methods.

Hahn. This work investigates the application of a high-order finite difference method for compressible large-eddy simulations on stretched, curvilinear and dynamic meshes. The solver utilizes 4th and 6th-order compact-differencing schemes for the spatial discretization, coupled with both explicit and implicit time-marching by: The first and most exhaustive work of its kind devoted entirely to the subject, Large Eddy Simulation presents a comprehensive account and a unified view of this young but very rich discipline.

LES is the only efficient technique for approaching high Reynolds numbers when simulating industrial. in Implicit Large-Eddy Simulation of Compressible Turbulent Flow Jonathan Poggie Air Force Research Laboratory, Wright-Patterson AFB, Ohio USA High- delity, implicit large-eddy simulations were performed for two supersonic turbu-lent boundary layers with Mach numbers of andand momentum thickness Reynolds.

We present two phenomenological subgrid-scale (SGS) models for large-eddy simulations (LES) of compressible turbulent flows. A nonlinear model and a stretched-vortex model are tested in LES of compressible decaying isotropic turbulence. Results of LES at, and resolution are compared to corresponding direct numerical simulations (DNS) at a Cited by: The variational multiscale formulation of large eddy simulations developed by Hughes and his co-workers for incompressible turbulent flows is first extended to the case of compressible turbulent flows.

Next, a finite volume/element discretization on tetrahedral meshes of Cited by: 1 Extended integral wall-model for large-eddy simulations of compressible wall-bounded 2 turbulent ows M. Catchirayer,1,2, a) J.-F.

Boussuge,1, b) P. Sagaut,3, c) M. Montagnac,1 D. 3 Papadogiannis,2 and X. Garnaud4 4 1)CERFACS, 42 Avenue Gaspard Coriolis, Toulouse, 5 6 France 2)SAFRAN Tech, Rue des Jeunes Bois, Ch^ateaufort { CS7 8 File Size: 2MB.

are availab e today. These technologies include large-eddy simulttion (LES) of turbulent flows, unstructured computatioaal fluid dynamics (CFD) algorithms, and parallel computer systems. Large-eddy simulation has been shown to provide accurate turbulent flow simulation tt a fraction of the cost of direct simulation.

Stolz, N. Adams, and L. Kleiser, “ The approximate deconvolution model for large-eddy simulations of compressible flows and its application to shock-turbulent-boundary-layer interaction,” Phys.

Flu (). CHAPTER LARGE EDDY SIMULATION Turbulent Flows Stephen B. Pope Cambridge University Press, °c Stephen B. Pope -2 0 2 4 r/∆ ∆ GFile Size: KB. Large-Eddy Simulations of Turbulence is an ideal introduction for people new to tailed discussion in Chapter 7 of LES of compressible flows – a topic previously methods to predict turbulent flows using large-eddy simulation (LES) are the main focus of the present book.

Large eddy simulations of homogeneous shear flows have been carried out with and without the scale-similarity model. The turbulence kinetic energy of Champagne, Harris, and Corrsin () is predicted accurately. The large eddy simulation results presented are intended to File Size: 4MB.

Xiaochuan Chai and Krishnan Mahesh, Dynamic -equation model for large-eddy simulation of compressible flows, Journal of Fluid Mechanics,(), ().

Crossref Long Sun, Anders Nottrott and Jan Kleissl, Effect of hilly urban morphology on dispersion in the urban boundary layer, Building and Environment, /nv Cited by:   We report recent progress on wall-modeled large-eddy simulation (LES) of wall bounded turbulent flows, including model development and case applications.

The sub-grid-scale (SGS) model employed is the stretched spiral vortex SGS model, originally proposed by Misra & Pullin (Phys. Fluids ). PROGRESS-VARIABLE APPROACH FOR LARGE-EDDY SIMULATION OF TURBULENT COMBUSTION adissertation Large eddy simulation (les) stands in the middle of the range of turbulent °ow At present, most large eddy simulations of turbulent combustion in complex {5.

Review of Internal Gas Flows with Property Variations 3 Experiments and Turbulence Modeling 3 DNS and LES Studies 5 Objectives 6 Develop an Efficient Finite Volume Scheme 6 Validate a Second-Order Accurate Compressible Finite Volume Formu­ lation for LES 7. Large Eddy Simulation (LES) directly calculates the large and energetic vortical structures in turbulent flows, while modelling the smaller-scales eddies.

Therefore, compared to Reynolds-Averaged Navier-Stokes (RANS) models, the advantage of LES are significant, being RANS effective only for steady simulations of fluid flows.

Large eddy simulation of compressible turbulent channel and annular pipe flows with system and wall rotations Joon Sang Lee Iowa State University Follow this and additional works at: Part of theAerospace Engineering Commons, and theMechanical Engineering CommonsAuthor: Joon Sang Lee.

LES for simulating turbulent flows, both incompressible and compressible, is outlined. This review article would be useful for those starting to consider using LES for turbulent flow simulations.

INTRODUCTION It is generally accepted that turbulent flow can be described by the Navier-Stokes (N-S) equations for viscous fluids.

Mathematics of Large Eddy Simulation of Turbulent Flows, One theme of this book is the connection between LES models and the Navier-Stokes equations rather than the phenomenology of turbulence.

Mathematical development will com-plement numerical experimentation and make LES more general, universal. Application of Artificial Fluid Properties for Stable and Accurate Large-Eddy Simulations of Compressible Turbulent Reactive Flows H. Ranadive1, H. Wang1 and E. Hawkes1;2 1School of Mechanical and Manufacturing Engineering University of New South Wales, NSWAustralia 2School of Photovoltaic and Renewable Energy Engineering.

TECHNICAL PAPERS. Large eddy simulation of three-dimensional turbulent flows by the finite element method. Adriane P. Petry I; Armando M. Awruch II. I Departamento de Engenharia Mecânica; Universidade Federal do Rio Grande do Sul; Porto Alegre, RS, Brazil; [email protected] II Sênior Member, ABCM; Programa de Engenharia Civil.

transport occurs almost exclusively on the smallest turbulent scales, also the combustion process happens on the small scales. In large-eddy simulations (LES), the large, energy containing turbulent motions are resolved and directly computed, and the small scale turbulent motions and their effect on the large scales has to be modelled.

MODELS FOR THE LARGE EDDY SIMULATION OF COMPRESSIBLE AND INCOMPRESSIBLE TURBULENT FLOWS By Jianfeng Liu A Thesis Submitted to the Graduate Faculty of Rensselaer Polytechnic Institute in Partial Fulflllment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY Major Subject: MECHANICAL ENGINEERING Approved by the Examining.

Large-eddy simulation (LES) has proven to be a computationally tractable approach to simulate unsteady turbulent flows. However, prohibitive resolution requirements induced by near-wall eddies in high–Reynolds number boundary layers necessitate the use of wall models or approximate wall boundary conditions.

We review recent investigations in wall-modeled LES, Cited by:   Large eddy simulations of in-cylinder turbulence for internal combustion engines: A review Show all authors. I Celik 1. Speziale, C. G., Zang, T.

Toward the large-eddy simulation of compressible turbulent flows J. Fluid MechanicsA linear-eddy mixing model for large eddy simulations of turbulent by: 4 Paper III: A nonlinear structural subgrid-scale closure for compressible MHD. A priori comparison on turbulence simulation data 55 5 Paper IV: Comparative statistics of selected subgrid-scale models in large eddy simulations of decaying, supersonic MHD turbulence 71 6 Summary and conclusions 85 Bibliography 91 A Discrete filter.

Developments in Large eddy Simulations of compressible magnetohydrodynamic turbulence Arakel Petrosyan The flatness factor (sometimes also called kurtosis) in turbulent flows is a measure of intermittency. The flatness is an indication of the occurrence of fluctuations far from the probability density function for turbulent compressible File Size: 1MB.

Large Eddy Simulation is generally perceived as a pdf effective and highly promising method pdf can considerably improve our modeling of turbulent flows. Application of LES has considerably increased in the past decade among thermofluid scholars as well as within different industries.

The main obstacles in further implementation of this method for engineering applications are Cited by: 2.Large-eddy simulation The need for a di erent approach in turbulent uid ow simulation rather download pdf attempting to solve ()-() directly stems from the fact that resolving all the relevant scales of turbulent motion requires both spatial and temporal resolutions that are incompatible with the computational resources currently available.

5File Size: 1MB.Ebook first ebook most exhaustive work of its kind devoted entirely to the subject, Large Eddy Simulation presents a comprehensive account and a unified view of this young but very rich discipline. LES is the only efficient technique for approaching high Reynolds numbers when simulating industrial, natural or experimental configurations.

The author concentrates on /5(3).