ISSN:0010-2202    

DOI:10.1080/00102209408935406

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

A fantastic vision of the work of combustion and safety engineers some years from now leads into a Sophoclean debate about the shortcomings of current and future research in turbulent combustion. The objectives of future research in turbulence theory and modeling, turbulent combustion modeling, direct numerical simulation and application of advanced laser diagnostics are discussed. A plea is made for making more efficient and coordinated use of the limited resources that are available.

ISSN:0010-2202    

DOI:10.1080/00102209408935407

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

The general needs for combustion research during the next 25 years are discussed in terms of the interactions between combustion science and the technologies of diesel engine combustion.

ISSN:0010-2202    

DOI:10.1080/00102209408935408

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

ISSN:0010-2202    

DOI:10.1080/00102209408935409

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

ISSN:0010-2202    

DOI:10.1080/00102209408935410

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

This article discusses some recent progress and future trends in turbulent combustion. Issues in turbulent combustion modeling (TCM) and some perspectives in active control are specifically considered. Modeling methods are first briefly surveyed to identify future developments. It is anticipated that further progress will be made in physical modeling based on flame surface density concepts and that physical modeling of turbulent flames will rely more heavily on modern computational tools like direct numerical simulation (DNS), large eddy simulations (LES), detailed numerical modeling (DNM) of simple flames. Physical modeling as it is practiced today will continue to evolve into more reliable methods for industrial design applications. As the computational resources progress one may also foresee that LES methods will take over and that research will shift from the Reynolds average approach to the more advanced LES computation of turbulent reactive flows. Because turbulent combustion is so complex, physical modeling and LES calculations will continuously need detailed experiments. These will emphasize field measurements based on imaging methods. It is expected that current progress in optical diagnostics will continue. Imaging diagnostics will become more easily applicable to practical situations. Their spatial and temporal resolution will be enhanced. Images will continue to provide qualitative information on the basic processes of turbulent combustion but improved experimental methods will yield more quantitative data. Another area which holds promises is that of active control. From current progress in this field one may foresee that advanced control schemes will play an increasing role in experimental investigations of instabilities and in practical optimization of turbulent combustors. “Intelligent combustor” concepts combining control loops with a combustion system are now being explored and will probably become of importance in enhancing the stability of combustion, in augmenting the domain of operation and in reducing the pollutant emission levels.

ISSN:0010-2202    

DOI:10.1080/00102209408935411

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

A short review of progress in the development of detailed chemical mechanisms for combustion modeling during the last 25 years is given, with some examples of today's specific chemical kinetic problems in combustion. Future advances in chemical kinetics and combustion modeling are speculated. The impact, in the field of chemical kinetic modeling of combustion, of expected changes in fuel resources and use during the next 25 years, and of possible emerging technologies is evaluated.

ISSN:0010-2202    

DOI:10.1080/00102209408935412

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

摘要:

Fire, the oldest combustion problem, is a major cause of human suffering and material loss, and yet our capabilities to predict its behavior for prevention and control is very limited. Efforts to improve fire safety have often concentrated on improving fire protection systems and extending fire service rather than on fire research. However, we see that fire periodically overruns the traditional fire suppression methods, particularly when there are natural disasters as wildland fires affecting urban areas, or earthquakes, or even when human errors or arson take place in complex facilities, such as petro-chemical industries, large buildings, or fuel transport. What is needed is a better fundamental understanding of fire initiation and development, which can then be applied during the design stage to minimize fire occurrence, rather than relying primarily on fire detection and suppression. The goal is to bring our predictive capabilities to a point where fire models could be developed for use by the designers of buildings, urban developments, factories, transportation, and space habitats, allowing them to evaluate the fire safety of their designs, and improve them if necessary. Significant progress has been made during the last twenty five years in fire prediction, but the question is whether we will be able to reach the above goal in the next quarter century.

ISSN:0010-2202    

DOI:10.1080/00102209408935413

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

ISSN:0010-2202    

DOI:10.1080/00102209408935414

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor

ISSN:0010-2202    

DOI:10.1080/00102209408935415

出版商:Taylor & Francis Group    

年代:1994

数据来源: Taylor