On the Numerical Prediction of Turbulent Diffusion Flames

On the Numerical Prediction of Turbulent Diffusion Flames PDF Author: F. Tamanini
Publisher:
ISBN:
Category :
Languages : en
Pages : 28

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On the Numerical Prediction of Turbulent Diffusion Flames

On the Numerical Prediction of Turbulent Diffusion Flames PDF Author: F. Tamanini
Publisher:
ISBN:
Category :
Languages : en
Pages : 28

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Book Description


Numerical Prediction of Turbulent Diffusion Flames Formed by Cylindrical Tube Injector

Numerical Prediction of Turbulent Diffusion Flames Formed by Cylindrical Tube Injector PDF Author: Ali S. Kheireddine
Publisher:
ISBN:
Category : Burges equation
Languages : en
Pages : 346

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Numerical Prediction of Flow, Heat Transfer, Turbulence and Combustion

Numerical Prediction of Flow, Heat Transfer, Turbulence and Combustion PDF Author: D. Brian Spalding
Publisher: Elsevier
ISBN: 1483160661
Category : Technology & Engineering
Languages : en
Pages : 445

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Book Description
Numerical Prediction of Flow, Heat Transfer, Turbulence and Combustion: Selected Works of Professor D. Brian Spalding focuses on the many contributions of Professor Spalding on thermodynamics. This compilation of his works is done to honor the professor on the occasion of his 60th birthday. Relatively, the works contained in this book are selected to highlight the genius of Professor Spalding in this field of interest. The book presents various research on combustion, heat transfer, turbulence, and flows. His thinking on separated flows paved the way for the multi-dimensional modeling of turbulence. Arguments on the universality of the models of turbulence and the problems that are associated with combustion engineering are clarified. The text notes the importance of combustion science as well as the problems associated with it. Mathematical computations are also presented in determining turbulent flows in different environments, including on curved pipes, curved ducts, and rotating ducts. These calculations are presented to further strengthen the claims of Professor Spalding in this discipline. The book is a great find for those who are interested in studying thermodynamics.

Numerical Prediction of the Dynamic Behaviour of Turbulent Diffusion Flames

Numerical Prediction of the Dynamic Behaviour of Turbulent Diffusion Flames PDF Author: Dieter Bohn
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
Presented at the International Gas Turbine and Aeroengine Congress &Exhibition Birmingham, UK - June 10-13, 1996.

Numerical Model for the Prediction of Buoyancy Controlled, Turbulent Diffusion Flames

Numerical Model for the Prediction of Buoyancy Controlled, Turbulent Diffusion Flames PDF Author: Francesco Tamanini
Publisher:
ISBN:
Category :
Languages : en
Pages : 137

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Direct Numerical Simulation for Turbulent Reacting Flows

Direct Numerical Simulation for Turbulent Reacting Flows PDF Author: Thierry Baritaud
Publisher: Editions TECHNIP
ISBN: 9782710806981
Category : Science
Languages : en
Pages : 328

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Book Description
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.

A Comparison of Numerical Predictions of Turbulent Diffusion Flame Using Reynolds Averaging and Favre Averaging Approaches

A Comparison of Numerical Predictions of Turbulent Diffusion Flame Using Reynolds Averaging and Favre Averaging Approaches PDF Author: H. C. Soong
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Modelling Detailed-Chemistry Effects on Turbulent Diffusion Flames Using a Parallel Solution-Adaptive Scheme

Modelling Detailed-Chemistry Effects on Turbulent Diffusion Flames Using a Parallel Solution-Adaptive Scheme PDF Author: Pradeep Kumar Jha
Publisher:
ISBN: 9780494782439
Category :
Languages : en
Pages : 374

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Book Description
Capturing the effects of detailed-chemistry on turbulent combustion processes is a central challenge faced by the numerical combustion community. However, the inherent complexity and non-linear nature of both turbulence and chemistry require that combustion models rely heavily on engineering approximations to remain computationally tractable. This thesis proposes a computationally efficient algorithm for modelling detailed-chemistry effects in turbulent diffusion flames and numerically predicting the associated flame properties. The cornerstone of this combustion modelling tool is the use of parallel Adaptive Mesh Refinement (AMR) scheme with the recently proposed Flame Prolongation of Intrinsic low-dimensional manifold (FPI) tabulated-chemistry approach for modelling complex chemistry. The effect of turbulence on the mean chemistry is incorporated using a Presumed Conditional Moment (PCM) approach based on a beta-probability density function (PDF). The two-equation k-w turbulence model is used for modelling the effects of the unresolved turbulence on the mean flow field. The finite-rate of methane-air combustion is represented here by using the GRI-Mech 3.0 scheme. This detailed mechanism is used to build the FPI tables. A state of the art numerical scheme based on a parallel block-based solution-adaptive algorithm has been developed to solve the Favre-averaged Navier-Stokes (FANS) and other governing partial-differential equations using a second-order accurate, fully-coupled finite-volume formulation on body-fitted, multi-block, quadrilateral/hexahedral mesh for two-dimensional and three-dimensional flow geometries, respectively. A standard fourth-order Runge-Kutta time-marching scheme is used for time-accurate temporal discretizations. Numerical predictions of three different diffusion flames configurations are considered in the present work: a laminar counter-flow flame; a laminar co-flow diffusion flame; and a Sydney bluff-body turbulent reacting flow. Comparisons are made between the predicted results of the present FPI scheme and Steady Laminar Flamelet Model (SLFM) approach for diffusion flames. The effects of grid resolution on the predicted overall flame solutions are also assessed. Other non-reacting flows have also been considered to further validate other aspects of the numerical scheme. The present schemes predict results which are in good agreement with published experimental results and reduces the computational cost involved in modelling turbulent diffusion flames significantly, both in terms of storage and processing time.

Prediction Methods for Turbulent Flows

Prediction Methods for Turbulent Flows PDF Author: Wolfgang Kollmann (mechanika)
Publisher: Hemisphere Pub
ISBN:
Category : Science
Languages : en
Pages : 482

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Book Description


Turbulent Combustion Modeling

Turbulent Combustion Modeling PDF Author: Tarek Echekki
Publisher: Springer Science & Business Media
ISBN: 9400704127
Category : Technology & Engineering
Languages : en
Pages : 496

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Book Description
Turbulent combustion sits at the interface of two important nonlinear, multiscale phenomena: chemistry and turbulence. Its study is extremely timely in view of the need to develop new combustion technologies in order to address challenges associated with climate change, energy source uncertainty, and air pollution. Despite the fact that modeling of turbulent combustion is a subject that has been researched for a number of years, its complexity implies that key issues are still eluding, and a theoretical description that is accurate enough to make turbulent combustion models rigorous and quantitative for industrial use is still lacking. In this book, prominent experts review most of the available approaches in modeling turbulent combustion, with particular focus on the exploding increase in computational resources that has allowed the simulation of increasingly detailed phenomena. The relevant algorithms are presented, the theoretical methods are explained, and various application examples are given. The book is intended for a relatively broad audience, including seasoned researchers and graduate students in engineering, applied mathematics and computational science, engine designers and computational fluid dynamics (CFD) practitioners, scientists at funding agencies, and anyone wishing to understand the state-of-the-art and the future directions of this scientifically challenging and practically important field.