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A 3d parallel CFD code is written to investigate the characteristics of and differences between Large Eddy Simulation (LES) models in the context of simulating a thermal buoyant plume. An efficient multigrid scheme is incorporated to solve the Poisson equation, resulting from the fractional step, projection method used to solve the Low Mach Number (LMN) Navier-Stokes equations. A wide range of LES models are implemented, including a variety of eddy models, structure models, mixed models and dynamic models, for both the momentum stresses and the temperature fluxes. Generalised gradient flux models are adapted from their RANS counterparts, and also tested. A number of characteristics are observed in the LES models relating to the thermal plume simulation in particular and turbulence in general. Effects on transition, dissipation, backscatter, equation balances, intermittency and energy spectra are all considered, as are the impact of the governing equations, the discretisation scheme, and the effect of grid coarsening. Also characteristics to particular models are considered, including the subgrid kinetic energy for the one-equation models, and constant histories for dynamic models. The argument that choice of LES model is unimportant is shown to be incorrect as a general statement, and a recommendation for when the models are best used is given

Topics:
Large eddy simulation, LES, Low Mach number, LMN, Navier-Stokes equations

Publisher: School of Engineering

Year: 2003

OAI identifier:
oai:dspace.lib.cranfield.ac.uk:1826/92

Provided by:
Cranfield CERES

Downloaded from
http://hdl.handle.net/1826/92

- (1994). A comparison of two dynamic closure methods for turbulent thermal convection,
- (1999). A direct one-step pressure actualisation for incompressible flow with pressure Neumann condition,
- (1995). A dynamic localization model for large-eddy simulation of turbulent flows,
- (1993). A dynamic mixed subgrid-scale model and its application to turbulent recirculating flows,
- (1991). A dynamic subgrid-scale eddy viscosity model,
- (1991). A dynamic subgrid-scale model for compressible turbulence and scalar transport,
- (1995). A Family of Large Eddy Simulation Filters with Nonuniform Filter Widths,
- (2000). A general algebraic formulation for multiparameter dynamic subgrid modelling,
- (1996). A Lagrangian dynamic subgrid-scale model of turbulence,
- (1987). A Multigrid Tutorial,
- (1995). A new non-eddy viscosity subgrid-scale model and its application to channel flow, Annual Research Briefs, Centre for Turbulence Research, NASA Ames/Stanford Univ.,
- (1993). A Nonreflecting Outlet Boundary Condition for Incompressible Unsteady Navier-Stokes Calculations,
- (1997). A Note on Derivation of the Equations for the Subgrid Turbulent Kinetic Energies,
- (1970). A numerical study of three-dimensional turbulent channel flow at large Reynolds numbers,
- (1996). A Parallel Incompressible Flow Solver Package with a Parallel Multigrid Elliptic Kernel,
- (1995). A priori tests of a new dynamic subgrid-scale model for finite-difference large eddy simulations,
- (1992). A proposed modification of the Germano subgrid-scale closure method,
- (1992). A proposed statistical-dynamic closure method for the linear or nonlinear subgrid-scale stresses,
- (1998). A Semi-Implicit Numerical Scheme for Reacting Flow.
- A statistically-derived subgrid model for the large-eddy simulation of turbulence,
- (1997). A subgrid scale model based on the estimation of unresolved scales of turbulence,
- (1996). Acceleration of Five-Point Red-Black Gauss-Seidel in Multigrid for Poisson Equation,
- (2001). Accurate Projection Methods for the Incompressible Navier-Stokes Equations,
- (1994). Achievements and Limitations in Modelling and Computation of Buoyant Turbulent Flows and Heat Transfer,
- (1996). An Analysis of Numerical Errors in Large Eddy Simulations of Turbulence,
- (2000). An Introduction to Turbulent Flow,
- (1992). An investigation of Finite-Difference Methods for Large-Eddy Simulation of a Mixing Layer,
- (1985). Application of a F ractional-Step Method to Incompressible Navier-Stokes Equations,
- (1997). Backward scatter of subgrid-scale energy in wall-bounded turbulence and free shear flow,
- (1973). Buoyancy Effects in Fluids,
- (1998). Centre for Turbulence Research, NASA Ames/Stanford Univ.,
- (1988). Closure of the Reynolds-stress and scalar flux equations,
- (1989). Coherent Structure of the Convective Boundary Layer Derived from Large-Eddy Simulations,
- (1992). Compact Finite Difference Schemes with Spectral-like Resolution,
- (1998). Comparison of dynamic Smagorinsky and anisotropic subgrid-scale models, P roc. Summer Program, Centre of Turbulence Research,
- (2001). Comparison of Modified k-e Turbulence Models for Buoyant Plumes,
- (1999). Comparison of Two One-Equation Subgrid Models in Recirculating Flows,
- (1995). Convection. Patterns, chaos, spatiotemporal chaos and turbulence,
- (2000). Direct and large-eddy simulation of the transition of two- and three-dimensional plumes in a confined enclosure,
- (1999). Direct numerical simulation of a turbulent reacting jet, Annual Research Briefs, Centre for Turbulence Research, NASA Ames/Stanford Univ.,
- (2001). Direct numerical simulation of incompressible turbulent flows,
- (1996). Dynamic model with scale-dependent coefficients in the viscous range,
- (1999). Dynamic testing of subgrid models in large eddy simulation based on the Germano identity,
- (1994). Effective Downstream Boundary Conditions for Incompressible Navier-Stokes Equations,
- (2001). Effects of ambient temperature on vertical buoyant water jets,
- (1977). Energy cascade in large-eddy simulations of turbulent flows,
- (1977). Evaluation of Subgrid-Scale Turbulence Models Using a Fully Simulated Turbulent Flow,
- (1990). Evaluation of Turbulence Models for Predicting Buoyant Flows,
- (1999). Evidence against ‘ultrahard’ thermal turbulence at very high Rayleigh numbers,
- (1994). Experiments on a round turbulent buoyant plume,
- (1997). Fractal model for coarse-grained nonlinear partial differential equations,
- (1985). Galilean invariance of subgrid-scale stress models in the large-eddy simulation of turbulence,
- (1963). General circulation experiments with the primitive equations,
- (1993). Geralized Smagorinsky model for anisotropic grids,
- High Re Solutions for Incompressible Flow using the Navier-Stokes Equations and a Multigrid Method,
- (1984). High Resolution Schemes using Flux Limiters for Hyperbolic Conservation Laws,
- (1991). Incompressible Fluid Dynamics: Some Fundamental Formulation Issues,
- (2000). Large Eddy Simulation for Incompressible Flows: An Introduction,
- (2001). Large eddy simulation for turbulent buoyant flow in a confined cavity,
- (1999). Large eddy simulation of a forced round turbulent buoyant plume in neutral surroundings, Annual Research Briefs, Centre for Turbulence Research, NASA Ames/Stanford Univ.,
- (1999). Large eddy simulation of compressible turbulent jets, Annual Research Briefs, Centre for Turbulence Research, NASA Ames/Stanford Univ.,
- (2003). Large eddy simulation of heat and mass transport in turbulent flows. Part 2: Scalar field,
- (2002). Large Eddy Simulation of High-Reynolds-Number Free and Wall-Bounded Flows,
- (2000). Large eddy simulation of indoor airflow with a filtered dynamic subgrid scale model,
- (1991). Large eddy simulation of turbulence-driven secondary flow in a square duct,
- (1985). Large Eddy Simulation of Turbulent Channel Flow by One-Equation Modelling,
- (2001). Large Eddy Simulation of Variable-Density Turbulent Flows Impinging on Wall Plates and Cavity Enclosures, Direct and Large Eddy Simulation IV,
- (1999). Large Eddy Simulation: Achievements and Challenges,
- (1992). Large eddy simulations of flow in a square duct,
- (2001). Large-eddy simulation of a turbulent forced plume,
- Large-eddy simulation of chaotic convection and beyond,
- (1995). Large-eddy simulation of flow past a circular cylinder,
- (1995). Large-eddy simulation of rotating channel flows using a localized dynamic model,
- (1996). Large-Eddy Simulation of Turbulent Mixing Layers,
- (2001). Large-Eddy Simulations of the Atmospheric Boundary Layer Using a New Subgrid-Scale Model,
- (1990). Local energy transfer and non-local interactions in homogeneous, isotropic turbulence,
- (1999). Mathematical and Physical Constraints on Large-Eddy Simulation of Turbulence,
- (1996). New Trends in Large Eddy Simulation,
- (1991). Non-reflecting Boundary Conditions,
- (1965). Numerical Calculation of T ime-Dependent Viscous Incompressible Flow of Fluid with Free Surface,
- (1993). Numerical experiments with highly variable eddy viscosity models,
- Numerical investigation of turbulent channel flow,
- (1985). Numerical simulation of the turbulent Rayleigh-Benard problem using subgrid modelling,
- (1996). On Absorbing Boundary Conditions for Linearized Euler Equations by a Perfectly Matched Layer,
- (1997). On Large Eddy Simulation of non-homogeneous flows, AIAA Report 97-0652,
- (1982). On the Filtering of Sound from the Navier-Stokes Equations, Sandia National Labs, Report SAND-82-8257,
- (1994). On the formulation of the dynamic mixed subgrid-scale model,
- (1994). On the properties of similarity subgrid-scale models as deduced from measurements in a turbulent jet,
- (1995). On the representation of backscatter in dynamic localization models,
- (1997). On the self-similarity assumption in dynamic models for large eddy simulations,
- (1971). On The Stability Of Laminar Plumes: Some Numerical Solutions And Experiments,
- (1995). On why dynamic subgrid-scale models work,
- (1992). Parametrization of subgrid-scale stress by the velocity gradient tensor, Annual Research Briefs, Centre for Turbulence Research, NASA Ames/Stanford Univ.,
- (1996). Rayleigh number scaling in numerical convection,
- (1994). Realizability conditions for the turbulent stress tensor in large-eddy simulation,
- (1977). Realizability of Reynolds-stress turbulence models,
- (1996). Reynolds Number Flow Simulations Using the Localized Dynamic Subgrid-Scale Model,
- (2001). Scaling of velocity power spectra in turbulent thermal convection, Physical Review E,
- (1989). Self-preservation of turbulent flows and its relation to initial conditions and coherent structures,
- (1996). Similarity considerations for non-Boussinesq plumes in an unstratified environment,
- (1994). Simulation of Smoke Plumes from Large Pool Fires, Twenty Fifth
- (1996). Small-scale properties of non-linear interactions and subgrid-scale energy transfer in isotropic turbulence,
- (1992). Spectral large eddy simulations of isotropic and stablystratified turbulence,
- (1935). Statistical theory of turbulence: Parts I-III,
- (1994). Statistics of turbulence subgrid-scale stresses: Necessary conditions and experimental tests,
- (2000). Strategies for turbulence modelling and simulations,
- (1997). Strongly Buoyant Plume Similarity and ‘Small-fire’ Ventilation,
- (1996). Study of discrete test filters and finite difference approximations for the dynamic subgrid-scale stress model,
- (2000). Subfilter-scale scalar transport for large eddy simulation, 14 th Symposium on boundary layers and turbulence,
- (1991). Subgrid-scale backscatter in turbulent and transitional flows,
- (1978). The Equations of Motion for Thermally Driven, Buoyant Flows,
- (1974). The Fast Fourier Transform,
- (1967). The Representation of Small-Scale Turbulence
- (1999). The subgrid estimation model in the physical space representation,
- (1953). The Theory of Homogeneous Turbulence,
- (2000). Time filtering in large eddy simulations,
- (2000). Towards LES of jets and plumes,
- (1993). Turbulence Modelling for CFD, DCW Industries,
- (2001). Turbulence Modelling of Turbulent Buoyant Jets and Compartment Fires, PhD Thesis,
- (1999). Turbulent convection with ‘disconnected’ top and bottom boundary layers,
- (2000). Turbulent Flows,
- (1956). Turbulent gravitational convection from maintained and instantaneous sources,
- (2001). Two-dimensional large-eddy simulation of turbulent natural convection due to internal heat generation,

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