Conditional Moment Closure Modelling of Turbulent Spray Flames PDF Download
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Author: Satoshi Ukai
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Satoshi Ukai
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Y. Yunardi
Publisher:
ISBN:
Category :
Languages : en
Pages : 566
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Author: Yuri Martin Wright
Publisher:
ISBN:
Category :
Languages : en
Pages : 135
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Author: Y YUNARDI
Publisher: LAP Lambert Academic Publishing
ISBN: 9783844316773
Category :
Languages : en
Pages : 320
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Book Description
This monograph presents an application of the first- order conditional moment closure (CMC) approach to modelling turbulent non-premixed flames of methane, propane and ethylene, with particular attention given to sooting flames. One objective of the current research is to investigate the practicability of incorporating gas-phase chemical mechanisms of varying length and complexity into calculations of turbulent non-premixed flames. Another objective is to extend the current scope of CMC combustion modelling by incorporating calculations of detailed gas-phase chemistry, soot formation and oxidation, and radiative heat transfer. Overall, predictions are in far better accord with experimental data when differential diffusion is accounted for in the model, and realistic prediction of soot levels are not possible without the incorporation of such effects. Given the simplicity and relative accuracy of the model described, it offers potential for future development to cover a wide range of hydrocarbon fuels, including the high hydrocarbons used in practical combustors, as well as for application in complex combustor's geometries.
Author: Nigel Stuart Allen Smith
Publisher:
ISBN:
Category : Combustion
Languages : en
Pages : 470
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Modeling methods applied in the field of turbulent combustion were investigated via Direct Numerical Simulations (DNS) and theoretical analysis with an emphasis on subgrid-scale modeling to be applied in Large Eddy Simulations (LES). The DNS results supported the conditional moment closure approximation, refuted the common modeling of differential diffusion effects, raised a suggestion for valid modeling of differential diffusion, resolved outstanding theoretical issues regarding mixing layers, and demonstrated the need for including flamelet/flamelet interactions in the modeling of extinction/reignition events. The DNS methodology was reconfirmed by comparison to the classical laboratory results of Comte-Bellot and Corrsin. A new subgrid-scale model (Large Eddy Laminar Flamelet; LELFM, a quasi-steady model) was established and applied to the prediction of laboratory results in a simulated mixing layer with nitric oxide/ozone reaction. The results support the modeling. New results were derived and confirmed via DNS regarding the subgrid-scale modeling of the filtered mixture fraction, its second moment and dissipation rate.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Modeling methods applied in the field of turbulent combustion were investigated via Direct Numerical Simulations (DNS) and theoretical analysis with an emphasis on subgrid-scale modeling to be applied in Large Eddy Simulations (LES). The DNS results supported the conditional moment closure approximation, refuted the common modeling of differential diffusion effects, raised a suggestion for valid modeling of differential diffusion, resolved outstanding theoretical issues regarding mixing layers, and demonstrated the need for including flamelet/flamelet interactions in the modeling of extinction/reignition events. The DNS methodology was reconfirmed by comparison to the classical laboratory results of Comte-Bellot and Corrsin. A new subgrid-scale model (Large Eddy Laminar Flamelet; LELFM, a quasi-steady model) was established and applied to the prediction of laboratory results in a simulated mixing layer with nitric oxide/ozone reaction. The results support the modeling. New results were derived and confirmed via DNS regarding the subgrid-scale modeling of the filtered mixture fraction, its second moment and dissipation rate.
Author: Cecile Brigitte Claudine Devaud
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Shokri Amzin
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Santanu De
Publisher: Springer
ISBN: 9811074100
Category : Science
Languages : en
Pages : 663
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Book Description
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.
