Annual Research Briefs

Annual Research Briefs

Author: Center for Turbulence Research (U.S.)

Publisher:

ISBN: UCAL:B5619118

Category: Turbulence

Page:

View: 106

Categories: Turbulence

Second order Modeling of Turbulent Reacting Flows with Intermittency and Conditional Averaging

Second order Modeling of Turbulent Reacting Flows with Intermittency and Conditional Averaging

Lumely , J.L .: Computational Modeling of Turbulent flows , Advances in Appl .
Mech . , 18 , pp . 123 ( 1978 ) . Lumley , J.L .: Prediction Methods for Turbulent
Flows , ( Kollmann ed . ) vol . 1 , Hemisphere publishing Co. , 1980 . Lundgren ,
T.S .

Author: Jyh-Yuan Chen

Publisher:

ISBN: CORNELL:31924004444109

Category: Fluid dynamics

Page: 356

View: 120

Categories: Fluid dynamics

Applied Mechanics Reviews

Applied Mechanics Reviews

... deformation of connectors and joints COMPUTERIZED between structural
elements in the computational models . A MODEL similar approach is used in
fluid dynamics when dealing with Model turbulent reacting flows and two - phase
flows .

Author:

Publisher:

ISBN: OSU:32435075915058

Category: Mechanical engineering

Page:

View: 576

Categories: Mechanical engineering

The Chemical Engineer

The Chemical Engineer

Computational models for turbulent reacting flows Computational Models for
Turbulent Reacting Flows by Rodney O Fox , Cambridge , hardback ( softback
also available ) , ISBN 0-5216-5907-8 ; ( £ 80.00 ) COMPUTATIONAL fluid
dynamics ...

Author:

Publisher:

ISBN: UCSD:31822032921579

Category: Chemical engineering

Page:

View: 479

Categories: Chemical engineering

Calculations of Turbulent Reactive Flows

Calculations of Turbulent Reactive Flows

COMPUTATIONAL MODELS FOR GAS - TURBINE COMBUSTORS W . Shyy , S .
M . Correa , and M . E . Braaten General Electric ... The problems of turbulence
closure models pertinent to turbulent reacting flows are also briefly discussed .

Author: American Society of Mechanical Engineers. Winter Meeting

Publisher:

ISBN: UOM:39015011179382

Category: Combustion

Page: 348

View: 975

Categories: Combustion

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports

An experimental investigation of structure , mixing and combustion in
compressible turbulent shear layers 11 p1807 N92-20330 ... Chemical reacting
flows 13 p2116 N92-22525 Turbulence modeling 14 P2301 N92-23338
Modeling of compressible turbulent shear flows 14 ... turbulent flows past a wing -
tuselage configuration 16 p2670 N92-25569 Turbulence and deterministic chaos
computational fluid ...

Author:

Publisher:

ISBN: STANFORD:36105008615499

Category: Aeronautics

Page:

View: 892

Categories: Aeronautics

AIAA Journal

AIAA Journal

45 in development of a highly parallel ( scalable ) FDF computational code is
expected to reduce the cost . ... Our current research in subgrid - scale modeling
is sponsored by the U . S . Air Force Office of Scientific Research under Grant
F49620 - 03 - 1 - 0022 ( Program Manager , Julian ... 16Pope , S . B . , “ PDF
Methods for Turbulent Reactive Flows , ” Progress in Energy and Combustion
Science , Vol .

Author: American Institute of Aeronautics and Astronautics

Publisher:

ISBN: STANFORD:36105122648913

Category: Aeronautics

Page:

View: 168

Categories: Aeronautics

Direct Numerical Simulation for Turbulent Reacting Flows

Direct Numerical Simulation for Turbulent Reacting Flows

Effects of curvature and unsteadiness in diffusion flames. Implications for turbulent diffusion combustion. Numerical simulations of autoignition in turbulent mixing flows. Stabilization processes of diffusion flames. References.

Author: Thierry Baritaud

Publisher: Editions TECHNIP

ISBN: 2710806983

Category: Technology & Engineering

Page: 310

View: 873

Contents: Description of accurate boundary conditions for the simulation of reactive flows. Parallel direct numerical simulation of turbulent reactive flow. Flame-wall interaction and heat flux modelling in turbulent channel flow. A numerical study of laminar flame wall interaction with detailed chemistry: wall temperature effects. Modeling and simulation of turbulent flame kernel evolution. Experimental and theoretical analysis of flame surface density modelling for premixed turbulent combustion. Gradient and counter-gradient transport in turbulent premixed flames. Direct numerical simulation of turbulent flames with complex chemical kinetics. Effects of curvature and unsteadiness in diffusion flames. Implications for turbulent diffusion combustion. Numerical simulations of autoignition in turbulent mixing flows. Stabilization processes of diffusion flames. References.
Categories: Technology & Engineering

CJChE

CJChE

Fox , R.O. , “ The Spectral Relaxation Model for Differential Diffusion in
Inhomogeneous Turbulence " , Phys . Fluid 11 , 1550-1571 ( 1999 ) . Fox , R.O. , "
Computational Models for Turbulent Reacting Flows " , Cambridge University
Press , to ...

Author:

Publisher:

ISBN: UCBK:C077402724

Category: Chemical engineering

Page:

View: 296

Categories: Chemical engineering

Turbulent Combustion

Turbulent Combustion

The lagrangian spectral relaxation model for differential diffusion in
homogeneous turbulence . Phys . Fluids , 11 ( 6 ) : 1550 – 1571 , 1999 . [ 108 ] R .
O . Fox . Computational models for turbulent reacting flows . Cambridge
University Press ...

Author: L. Vervisch

Publisher:

ISBN: PSU:000058093245

Category: Combustion

Page:

View: 733

Categories: Combustion

FY US Air Force Plan for Defense Research Sciences

FY     US Air Force Plan for Defense Research Sciences

Combustion and Reacting Flow , Modeling Turbulent Combustion ( RO 5.2.3 , 5.2
.4 , 5.2.5 ) : Attention will be focused on understanding turbulent ... ( 230887 , $
295K ) Unsteady flow computer models for combusting Flow will be developed .

Author:

Publisher:

ISBN: UIUC:30112105111204

Category: Aeronautics, Military

Page:

View: 859

Categories: Aeronautics, Military

Air Pollution XIII

Air Pollution XIII

[ 11 ] Meeder , J . P . & Nieuwstadt , F . T . M . , Large eddy simulation of the
turbulent dispersion of a reactive plume from a point source into a neutral
atmospheric boundary ... [ 14 ] Fox , R . O . , Computational models for turbulent
reacting flows .

Author: C. A. Brebbia

Publisher: Wit Pr/Computational Mechanics

ISBN: 1845640144

Category: Science

Page: 673

View: 423

'Air Pollution XIII' presents some of the latest developments in this field, bringing together recent results and state-of-the-art contributions from researchers around the world. It contains the papers presented at the 13th International Conference on Modelling, Monitoring and Management of Air Pollution.
Categories: Science

Computational Models for Polydisperse Particulate and Multiphase Systems

Computational Models for Polydisperse Particulate and Multiphase Systems

All-inclusive introduction to polydisperse multiphase flows linking theory to practice through numerous real-world examples and MATLAB® scripts for key algorithms.

Author: Daniele L. Marchisio

Publisher: Cambridge University Press

ISBN: 9780521858489

Category: Mathematics

Page: 508

View: 434

All-inclusive introduction to polydisperse multiphase flows linking theory to practice through numerous real-world examples and MATLAB scripts for key algorithms.
Categories: Mathematics

PDF Models for Mixing in Turbulent Reactive Flows

PDF Models for Mixing in Turbulent Reactive Flows

In modeling turbulent reactive flows based on the transport equation for the joint probability density function (PDF) of velocity and composition, the change in fluid composition due to convection and reaction is treated exactly, while ...

Author: Shankar Subramaniam

Publisher:

ISBN: CORNELL:31924080555091

Category:

Page: 372

View: 432

In modeling turbulent reactive flows based on the transport equation for the joint probability density function (PDF) of velocity and composition, the change in fluid composition due to convection and reaction is treated exactly, while molecular mixing has to be modeled. A new mixing-model is proposed, which is local in composition space and which seeks to address problems encountered in flows with simultaneous mixing and reaction. In this model the change in particle composition is determined by particle interactions along the edges of a Euclidean minimum spanning tree (EMST) constructed in composition space. Results obtained for the model problem of passive scalars evolving under the influence of a mean scalar gradient in homogeneous turbulence are found to be in reasonable agreement with experimental data. A model problem for studying turbulent nonpremixed reacting flow is proposed which captures several important features of turbulent flames. The solutions to this problem are parametrized by the Damkohler number and the reaction zone thickness parameter. At sufficiently high Damkohler number there is stable reaction, but as the Damkohler number is decreased below a critical value, global extinction occurs. The range of parameter values is chosen such that the model problem reproduces important phenomena such as stable near equilibrium reaction, local extinction and global extinction. A self-similar model thermochemistry is proposed which allows access to the parameter range of interest at reasonable computational expense. Monte Carlo simulations are performed to solve for the joint PDF of velocity, turbulent frequency and composition. Results are compared for two different mixing models: the interaction by exchange with the mean (IEM) model, and the Euclidean Minimum Spanning Tree (EMST) model. For large values of the reaction zone thickness parameter it is found that the models are in good agreement with each other and also with the simpler conditional moment closure (CMC) model. However, there are significant differences between the model predictions for values of this parameter below unity. The results support the idea that the localness principle, which is the essential feature of the new EMST mixing model, provides a more physically accurate representation of mixing in such reactive flows.
Categories:

Combustion in Reactive Systems

Combustion in Reactive Systems

Technical Papers from the Seventh International Colloquium on Gasdynamics of
Explosions and Reactive Systems, Göttingen, ... Before a computational model
capable of predicting ignition in turbulent , reacting shear flows can be developed
 ...

Author: J. Raymond Bowen

Publisher: AIAA (American Institute of Aeronautics & Astronautics)

ISBN: UOM:39015002944653

Category: Combustion

Page: 656

View: 361

Categories: Combustion

Proceedings of the ASME Joint U S European Fluids Engineering Conference

Proceedings of the     ASME Joint U S  European Fluids Engineering Conference

close time scales , a surprising result given the very different underlying
phenomenology of the two models . 5x10 ' o ... [ 18 ] Fox , R . O . , 2003 ,
Computational Models for Turbulent Reacting Flows , Cambridge University
Press . [ 19 ] Curl , R ...

Author:

Publisher:

ISBN: UOM:39015058903389

Category: Fluid mechanics

Page:

View: 494

Categories: Fluid mechanics

Proceedings of the National Science Council Republic of China

Proceedings of the National Science Council  Republic of China

In : Turbulent Reacting Flows , pp . 211-308 . ... Correa , S. M. and W. Shyy ( 1987
) Computational models and methods for ... Crowe , C. T. , T. R. Troutt , and J. N.
Chung ( 1996 ) Numerical models for two - phase turbulent flows . Annual Rev.

Author:

Publisher:

ISBN: UVA:X006124988

Category: Earth sciences

Page:

View: 606

Categories: Earth sciences

Modeling and Simulation of Turbulent Combustion

Modeling and Simulation of Turbulent Combustion

This book presents a comprehensive review of state-of-the-art models for turbulent combustion, with special emphasis on the theory, development and applications of combustion models in practical combustion systems.

Author: Santanu De

Publisher: Springer

ISBN: 9789811074103

Category: Science

Page: 661

View: 399

This book presents a comprehensive review of state-of-the-art models for turbulent combustion, with special emphasis on the theory, development and applications of combustion models in practical combustion systems. It simplifies the complex multi-scale and nonlinear interaction between chemistry and turbulence to allow a broader audience to understand the modeling and numerical simulations of turbulent combustion, which remains at the forefront of research due to its industrial relevance. Further, the book provides a holistic view by covering a diverse range of basic and advanced topics—from the fundamentals of turbulence–chemistry interactions, role of high-performance computing in combustion simulations, and optimization and reduction techniques for chemical kinetics, to state-of-the-art modeling strategies for turbulent premixed and nonpremixed combustion and their applications in engineering contexts.
Categories: Science