Numerical Simulation Of Buoyancy Effects In Turbulent Flow

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Numerical Simulation Of Buoyancy Effects In Turbulent Flow

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Author : Peter Terhoeven
language : en
Publisher:
Release Date : 1990

Numerical Simulation Of Buoyancy Effects In Turbulent Flow written by Peter Terhoeven and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.

Direct Numerical Simulation Of Turbulent Nonpremixed Reacting Flows With Buoyancy Effects

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Author : Rongbin Zhong
language : en
Publisher:
Release Date : 1999

Direct Numerical Simulation Of Turbulent Nonpremixed Reacting Flows With Buoyancy Effects written by Rongbin Zhong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Combustion categories.

Large Eddy Simulation Of Turbulent Channel Flow With Buoyancy Effects

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Author : Joon Sang Lee
language : en
Publisher:
Release Date : 1999

Large Eddy Simulation Of Turbulent Channel Flow With Buoyancy Effects written by Joon Sang Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.

Structured grid finite volume formulations have been developed to solve the compressible Navier-Stokes equations for performing large eddy simulation of turbulent flows. These compressible formulations were developed using low Mach number preconditioning. Time marching was done with a coupled strongly implicit scheme. The discretization schemes were second-order accurate central difference and third-order accurate upwind and a comparison was made between two schemes. Validations were performed using turbulent compressible benchmark flows with low heat transfer. The results were compared to direct numerical simulation, experimental, and other large eddy simulation results. The large eddy simulations yielded excellent agreement with the direct numerical simulation and experimental results for incompressible turbulence. For the significant property variations, high heat transfer rate was imposed and the effects of buoyancy on the turbulent structures under stably, and unstably stratified flows were investigated. The effects of buoyancy were larger in the central region of channel where the largest Richardson number occurred. Despite the fact that the relative buoyancy production was small near the boundary walls, effects of buoyancy were observed.

Turbulent Flows

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Author : G. Biswas
language : en
Publisher: CRC Press
Release Date : 2002

Turbulent Flows written by G. Biswas and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Technology & Engineering categories.

This book allows readers to tackle the challenges of turbulent flow problems with confidence. It covers the fundamentals of turbulence, various modeling approaches, and experimental studies. The fundamentals section includes isotropic turbulence and anistropic turbulence, turbulent flow dynamics, free shear layers, turbulent boundary layers and plumes. The modeling section focuses on topics such as eddy viscosity models, standard K-E Models, Direct Numerical Stimulation, Large Eddy Simulation, and their applications. The measurement of turbulent fluctuations experiments in isothermal and stratified turbulent flows are explored in the experimental methods section. Special topics include modeling of near wall turbulent flows, compressible turbulent flows, and more.

Turbulent Shear Flows 8

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Author : Franz Durst
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Turbulent Shear Flows 8 written by Franz Durst and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

This volume contains a selection of the papers presented at the Eighth Symposium on Turbulent Shear Flows held at the Technical University of Munich, 9-11 September 1991. The first of these biennial international symposia was held at the Pennsylvania State Uni versity, USA, in 1977; subsequent symposia have been held at Imperial College, London, England; the University of California, Davis, USA; the University of Karlsruhe, Ger many; Cornell University, Ithaca, USA; the Paul Sabatier University, Toulouse, France; and Stanford University, California, USA. The purpose of this series of symposia is to provide a forum for the presentation and discussion of new developments in the field of turbulence, especially as related to shear flows of importance in engineering and geo physics. From the 330 extended abstracts submitted for this symposium, 145 papers were presented orally and 60 as posters. Out of these, we have selected twenty-four papers for inclusion in this volume, each of which has been revised and extended in accordance with the editors' recommendations. The following four theme areas were selected after consideration of the quality of the contributions, the importance of the area, and the selection made in earlier volumes: - wall flows, - separated flows, - compressibility effects, - buoyancy, rotation, and curvature effects. As in the past, each section corresponding to the above areas begins with an introduction by an authority in the field that places the individual contributions in context with one another and with related research.

Analysis And Modeling Of Buoyancy Generated Turbulence Using Numerical Data

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Author :
language : en
Publisher:
Release Date : 1997

Analysis And Modeling Of Buoyancy Generated Turbulence Using Numerical Data written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.

Rayleigh-Bernard convection offers a unique flow situation in which buoyancy-generated turbulence can be studied in isolation, free of the complicating influence of shear production of turbulence. The objective of this paper is to examine and model important aspects of buoyancy-generated turbulence using direct numerical simulation (DNS) data of Rayleigh-Bernard convection. In particular, we examine the pressure-strain and pressure temperature-gradient correlations, turbulent transport of Reynolds stress, and assumptions pertaining to algebraic modeling of thermal flux and Reynolds stress.

Analysis And Modeling Of Buoyancy Generated Turbulence Using Numerical Data

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Author : Sharath S. Girimaji
language : en
Publisher:
Release Date : 1997

Analysis And Modeling Of Buoyancy Generated Turbulence Using Numerical Data written by Sharath S. Girimaji and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Momentum transfer categories.

Prediction Methods For Turbulent Flows

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Author : Wolfgang Kollmann (mechanika)
language : en
Publisher: Hemisphere Pub
Release Date : 1980

Prediction Methods For Turbulent Flows written by Wolfgang Kollmann (mechanika) and has been published by Hemisphere Pub this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Science categories.

Direct And Large Eddy Simulation Iv

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Author : Bernard Geurts
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29

Direct And Large Eddy Simulation Iv written by Bernard Geurts and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-29 with Technology & Engineering categories.

This volume contains the proceedings of the 2001 DLES4 workshop. It describes and discusses state-of-the-art modeling and simulation approaches for complex flows. Fundamental turbulence and modeling issues but also elements from modern numerical analysis are at the heart of this field of interest.

Turbulence And Interactions

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Author : Michel Deville
language : en
Publisher: Springer
Release Date : 2014-10-15

Turbulence And Interactions written by Michel Deville and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-15 with Technology & Engineering categories.

Keynote Lectures.- Some Characteristics of Non-Reacting and Reacting Low Swirl Number Jets.- Inner-Outer Interactions in Wall-Bounded Turbulence.- Turbulence Interaction with Atmospheric Physical Processes.- LES of Pulsating Turbulent Flows over Smooth and Wavy Boundaries.- Numerical Study of Turbulence-Wave Interaction.- High Reynolds Number Wall-Bounded Turbulence and a Proposal for a New Eddy-Based Model.- Regular Papers.- PANS Methodology Applied to Elliptic-Relaxation Based Eddy Viscosity Transport Model.- PIV Study of Turbulent Flow in Porous Media.- A Model for Dissipation: Cascade SDE with Markov Regime-Switching and Dirichlet Prior.- Wavelet Analysis of the Turbulent LES Data of the Lid-Driven Cavity Flow.- A Two-Phase LES Compressible Model for Plasma-Liquid Jet Interaction.- Simulation of a Fluidized Bed Using a Hybrid Eulerian-Lagrangian Method for Particle Tracking.- Wavelet-Adapted Sub-grid Scale Models for LES.- Effect of Particle-Particle Collisions on the Spatial Distribution of Inertial Particles Suspended in Homogeneous Isotropic Turbulent Flows.- Effect of Near-Wall Componental Modification of Turbulence on Its Statistical Properties.- Large-Eddy Simulation of Transonic Buffet over a Supercritical Airfoil.- Large Eddy Simulation of Coherent Structures over Forest Canopy.- Toroidal/Poloidal Modes Dynamics in Anisotropic Turbulence.- Grid Filter Modeling for Large-Eddy Simulation.- Pulsating Flow through Porous Media.- Thermodynamic Fluctuations Behaviour during a Sheared Turbulence/Shock Interaction.- LES and DES Study of Fluid-Particle Dynamics in a Human Mouth-Throat Geometry.- Viscous Drag Reduction with Surface-Embedded Grooves.- Study on the Resolution Requirements for DNS in Turbulent Rayleigh-Bénard Convection.- On the Role of Coherent Structures in a Lid Driven Cavity Flow.- Local versus Nonlocal Processes in Turbulent Flows, Kinematic Coupling and General Stochastic Processes.- Time-Resolved 3D Simulation of an Aircraft Wing with Deployed High-Lift System.- Fluid Mechanics and Heat Transfer in a Channel with Spherical and Oval Dimples.- Investigation of the Flow around a Cylinder Plate Configuration with Respect to Aerodynamic Noise Generation Mechanisms.- LES of the Flow around Ahmed Body with Active Flow Control.- Enhanced Bubble Migration in Turbulent Channel Flow by an Acceleration-Dependent Drag Coefficient.- Experimental and Numerical Study of Unsteadiness in Boundary Layer / Shock Wave Interaction.- Measurement of Particle Accelerations with the Laser Doppler Technique.- A Novel Numerical Method for Turbulent, Two-Phase Flow.- Modeling of High Reynolds Number Flows with Solid Body Rotation or Magnetic Fields.- Direct Numerical Simulation of Buoyancy Driven Turbulence inside a Cubic Cavity.- Numerical Simulations of a Massively Separated Reactive Flow Using a DDES Approach for Turbulence Modelling.- Particle Dispersion in Large-Eddy Simulations: Influence of Reynolds Number and of Subgrid Velocity Deconvolution.- Use of Lagrangian Statistics for the Direct Analysis of the Turbulent Constitutive Equation.- Numerical Simulation of Supersonic Jet Noise with Overset Grid Techniques.- Large Eddy Simulation of Turbulent Jet Flow in Gas Turbine Combustors.- Computations of the Flow around a Wind Turbine: Grid Sensitivity Study and the Influence of Inlet Conditions.- Stochastic Synchronization of the Wall Turbulence.- Large-Eddy Simulations of an Oblique Shock Impinging on a Turbulent Boundary Layer: Effect of the Spanwise Confinement on the Low-Frequency Oscillations.- Parameter-Free Symmetry-Preserving Regularization Modelling of Turbulent Natural Convection Flows.- An a Priori Study for the Modeling of Subgrid Terms in Multiphase Flows.- Computation of Flow in a 3D Diffuser Using a Two-Velocity Field Hybrid RANS/LES.- On the Dynamics of High Reynolds Number Turbulent Axisymmetric and Plane Separating/Reattaching Flows.- Numerical Simulation and Statistical Modeling of Inertial Droplet Coalescence