Direct Numerical Simulations Of Non Premixed Turbulent Reacting Flows


Direct Numerical Simulations Of Non Premixed Turbulent Reacting Flows
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Direct Numerical Simulations Of Non Premixed Turbulent Reacting Flows


Direct Numerical Simulations Of Non Premixed Turbulent Reacting Flows
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Author : Yong-Yao Lee
language : en
Publisher:
Release Date : 1994

Direct Numerical Simulations Of Non Premixed Turbulent Reacting Flows written by Yong-Yao Lee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.




Direct Numerical Simulation For Turbulent Reacting Flows


Direct Numerical Simulation For Turbulent Reacting Flows
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Author : Thierry Baritaud
language : en
Publisher: Editions TECHNIP
Release Date : 1996

Direct Numerical Simulation For Turbulent Reacting Flows written by Thierry Baritaud and has been published by Editions TECHNIP this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Science categories.


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.



Data Analysis For Direct Numerical Simulations Of Turbulent Combustion


Data Analysis For Direct Numerical Simulations Of Turbulent Combustion
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Author : Heinz Pitsch
language : en
Publisher: Springer Nature
Release Date : 2020-05-28

Data Analysis For Direct Numerical Simulations Of Turbulent Combustion written by Heinz Pitsch and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-05-28 with Mathematics categories.


This book presents methodologies for analysing large data sets produced by the direct numerical simulation (DNS) of turbulence and combustion. It describes the development of models that can be used to analyse large eddy simulations, and highlights both the most common techniques and newly emerging ones. The chapters, written by internationally respected experts, invite readers to consider DNS of turbulence and combustion from a formal, data-driven standpoint, rather than one led by experience and intuition. This perspective allows readers to recognise the shortcomings of existing models, with the ultimate goal of quantifying and reducing model-based uncertainty. In addition, recent advances in machine learning and statistical inferences offer new insights on the interpretation of DNS data. The book will especially benefit graduate-level students and researchers in mechanical and aerospace engineering, e.g. those with an interest in general fluid mechanics, applied mathematics, and the environmental and atmospheric sciences.



A Numerical Study Of Mixing In Stationary Nonpremixed Turbulent Reacting Flows


A Numerical Study Of Mixing In Stationary Nonpremixed Turbulent Reacting Flows
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Author : Matthew Ryan Overholt
language : en
Publisher:
Release Date : 1998

A Numerical Study Of Mixing In Stationary Nonpremixed Turbulent Reacting Flows written by Matthew Ryan Overholt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.




Modeling And Simulation Of Turbulent Mixing And Reaction


Modeling And Simulation Of Turbulent Mixing And Reaction
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Author : Daniel Livescu
language : en
Publisher: Springer Nature
Release Date : 2020-02-19

Modeling And Simulation Of Turbulent Mixing And Reaction written by Daniel Livescu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-19 with Technology & Engineering categories.


This book highlights recent research advances in the area of turbulent flows from both industry and academia for applications in the area of Aerospace and Mechanical engineering. Contributions include modeling, simulations and experiments meant for researchers, professionals and students in the area.



Large Eddy Simulation And Direct Numerical Simulation Of High Speed Turbulent Reacting Flows


Large Eddy Simulation And Direct Numerical Simulation Of High Speed Turbulent Reacting Flows
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-25

Large Eddy Simulation And Direct Numerical Simulation Of High Speed Turbulent Reacting Flows written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-25 with categories.


The objective of this research is to make use of Large Eddy Simulation (LES) and Direct Numerical Simulation (DNS) for the computational analyses of high speed reacting flows. Our efforts in the first phase of this research conducted within the past three years have been directed in several issues pertaining to intricate physics of turbulent reacting flows. In our previous 5 semi-annual reports submitted to NASA LaRC, as well as several technical papers in archival journals, the results of our investigations have been fully described. In this progress report which is different in format as compared to our previous documents, we focus only on the issue of LES. The reason for doing so is that LES is the primary issue of interest to our Technical Monitor and that our other findings were needed to support the activities conducted under this prime issue. The outcomes of our related investigations, nevertheless, are included in the appendices accompanying this report. The relevance of the materials in these appendices are, therefore, discussed only briefly within the body of the report. Here, results are presented of a priori and a posterior analyses for validity assessments of assumed Probability Density Function (PDF) methods as potential subgrid scale (SGS) closures for LES of turbulent reacting flows. Simple non-premixed reacting systems involving an isothermal reaction of the type A + B yields Products under both chemical equilibrium and non-equilibrium conditions are considered. A priori analyses are conducted of a homogeneous box flow, and a spatially developing planar mixing layer to investigate the performance of the Pearson Family of PDF's as SGS models. A posteriori analyses are conducted of the mixing layer using a hybrid one-equation Smagorinsky/PDF SGS closure. The Smagorinsky closure augmented by the solution of the subgrid turbulent kinetic energy (TKE) equation is employed to account for hydrodynamic fluctuations, and the PDF is employed for modeling the ...



Experiments And Numerical Simulations Of Diluted Spray Turbulent Combustion


Experiments And Numerical Simulations Of Diluted Spray Turbulent Combustion
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Author : Bart Merci
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-06-20

Experiments And Numerical Simulations Of Diluted Spray Turbulent Combustion written by Bart Merci 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 2011-06-20 with Technology & Engineering categories.


This book reflects the outcome of the 1st International Workshop on Turbulent Spray Combustion held in 2009 in Corsica (France). The focus is on reporting the progress of experimental and numerical techniques in two-phase flows, with emphasis on spray combustion. The motivation for studies in this area is that knowledge of the dominant phenomena and their interactions in such flow systems is essential for the development of predictive models and their use in combustor and gas turbine design. This necessitates the development of accurate experimental methods and numerical modelling techniques. The workshop aimed at providing an opportunity for experts and young researchers to present the state-of-the-art, discuss new developments or techniques and exchange ideas in the areas of experimentations, modelling and simulation of reactive multiphase flows. The first two papers reflect the contents of the invited lectures, given by experts in the field of turbulent spray combustion. The first concerns computational issues, while the second deals with experiments. These lectures initiated very interesting and interactive discussions among the researchers, further pursued in contributed poster presentations. Contributions 3 and 4 focus on some aspects of the impact of the interaction between fuel evaporation and combustion on spray combustion in the context of gas turbines, while the final article deals with the interaction between evaporation and turbulence.



Modeling And Simulation Of Turbulent Combustion


Modeling And Simulation Of Turbulent Combustion
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Author : Santanu De
language : en
Publisher: Springer
Release Date : 2017-12-12

Modeling And Simulation Of Turbulent Combustion written by Santanu De and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-12 with Science categories.


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.



Direct Numerical Simulations Of Strained Laminar And Turbulent Nonpremixed Flames


Direct Numerical Simulations Of Strained Laminar And Turbulent Nonpremixed Flames
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Author : Chunsang Yoo
language : en
Publisher:
Release Date : 2005

Direct Numerical Simulations Of Strained Laminar And Turbulent Nonpremixed Flames written by Chunsang Yoo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.




Turbulent Reactive Flows


Turbulent Reactive Flows
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Author : R. Borghi
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-08

Turbulent Reactive Flows written by R. Borghi 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 2013-03-08 with Science categories.


Turbulent reactive flows are of common occurrance in combustion engineering, chemical reactor technology and various types of engines producing power and thrust utilizing chemical and nuclear fuels. Pollutant formation and dispersion in the atmospheric environment and in rivers, lakes and ocean also involve interactions between turbulence, chemical reactivity and heat and mass transfer processes. Considerable advances have occurred over the past twenty years in the understanding, analysis, measurement, prediction and control of turbulent reactive flows. Two main contributors to such advances are improvements in instrumentation and spectacular growth in computation: hardware, sciences and skills and data processing software, each leading to developments in others. Turbulence presents several features that are situation-specific. Both for that reason and a number of others, it is yet difficult to visualize a so-called solution of the turbulence problem or even a generalized approach to the problem. It appears that recognition of patterns and structures in turbulent flow and their study based on considerations of stability, interactions, chaos and fractal character may be opening up an avenue of research that may be leading to a generalized approach to classification and analysis and, possibly, prediction of specific processes in the flowfield. Predictions for engineering use, on the other hand, can be foreseen for sometime to come to depend upon modeling of selected features of turbulence at various levels of sophistication dictated by perceived need and available capability.