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- W2022898095 abstract "Due to their fundamental importance for premixed combustion theory, turbulent flame speed and thickness were a subject of a large number of investigations for many decades. The paper reviews the research and extensively discusses the still unresolved issues in an attempt to define a foundation for evaluating different combustion models and defining a simple approach to multi-dimensional computations of premixed turbulent combustion. The approach consists of the use of an algebraic expression for the local turbulent flame speed in order to close the averaged balance equations describing the combustion process. Several models have been suggested utilizing this approach and the first laboratory and industrial applications of them have shown encouraging results. These successful applications motivate a thorough discussion and further development of the approach. Models utilizing the approach are reviewed and two issues are emphasized. First, certain models focus on the combustion regime characterized by a growing mean flame brush thickness, whereas other models are associated with fully developed flames of asymptotically stationary structure. Second, many different expressions for flame speed are invoked by different models. Thus, the behavior of the mean flame brush thickness and flame speed should be analyzed in order to provide a more solid phenomenological base for the approach and this is the main goal of the paper. Moreover, such an analysis also aims at selecting experimentally well-established trends and, thus, contributes to the development of a database necessary for testing various models of premixed turbulent combustion. Sources of errors in measurements of turbulent flame speeds are discussed and strong quantitative scatter of the published data is demonstrated. Nevertheless, turbulent flame speed, St, is shown to be a phenomenologically meaningful quantity, because various experimental investigations indicate the same qualitative trends in the behavior of St at moderate turbulence. The following trends: (1) an increase in St by rms turbulent velocity u′; (2) an increase in St and dSt/du′ by the laminar burning velocity; and (3) an increase in St by pressure despite the decrease in the laminar burning velocity, are well-established and can be used for testing various models of premixed turbulent combustion. Moreover, certain experimental results indicate a decrease in St by molecular transfer coefficients, other things being equal, and this trend may also be used for testing models. A number of various expressions for St, available in the literature, are tested against well-established trends, but only a few expressions are shown to be able to predict all the basic trends. An analysis of numerous experimental data obtained by various teams under different conditions indicates that a self-similar regime of premixed turbulent combustion, characterized by growing mean flame brush thickness, δt, and by the universal dimensionless spatial profile of the progress variable across the brush, occurs in most laboratory and industrial burners. The development of δt is mainly controlled by turbulent diffusion. Only certain models are able to describe this regime. From the group of models evaluated positively, the Flame Speed Closure (FSC) model is highlighted since: (1) it corresponds to the regime of growing mean flame brush thickness; and (2) it utilizes an experimentally well-supported expression for turbulent flame speed. Various numerical tests of the model, performed by numerous teams under substantially different conditions are summarized. Further development and validation of the model and it applications are reviewed. Finally, the paper shows that, after decades of long research, a simple, robust, conceptually straightforward, and extensively validated premixed combustion simulation tool is available for applications now." @default.
- W2022898095 created "2016-06-24" @default.
- W2022898095 creator A5005938933 @default.
- W2022898095 creator A5028031535 @default.
- W2022898095 date "2002-01-01" @default.
- W2022898095 modified "2023-10-14" @default.
- W2022898095 title "Turbulent flame speed and thickness: phenomenology, evaluation, and application in multi-dimensional simulations" @default.
- W2022898095 cites W1524537657 @default.
- W2022898095 cites W1534690024 @default.
- W2022898095 cites W1586040994 @default.
- W2022898095 cites W1589965894 @default.
- W2022898095 cites W1599147649 @default.
- W2022898095 cites W1919326725 @default.
- W2022898095 cites W1963684112 @default.
- W2022898095 cites W1963854780 @default.
- W2022898095 cites W1964467585 @default.
- W2022898095 cites W1964983490 @default.
- W2022898095 cites W1965245227 @default.
- W2022898095 cites W1966524821 @default.
- W2022898095 cites W1967241567 @default.
- W2022898095 cites W1967274313 @default.
- W2022898095 cites W1967642953 @default.
- W2022898095 cites W1967834548 @default.
- W2022898095 cites W1967945440 @default.
- W2022898095 cites W1968908305 @default.
- W2022898095 cites W1969120563 @default.
- W2022898095 cites W1969336024 @default.
- W2022898095 cites W1969462212 @default.
- W2022898095 cites W1969872704 @default.
- W2022898095 cites W1970664071 @default.
- W2022898095 cites W1970781172 @default.
- W2022898095 cites W1972224529 @default.
- W2022898095 cites W1972954434 @default.
- W2022898095 cites W1973000199 @default.
- W2022898095 cites W1975119917 @default.
- W2022898095 cites W1976830110 @default.
- W2022898095 cites W1977358495 @default.
- W2022898095 cites W1977375176 @default.
- W2022898095 cites W1977878117 @default.
- W2022898095 cites W1978107288 @default.
- W2022898095 cites W1978336732 @default.
- W2022898095 cites W1978895496 @default.
- W2022898095 cites W1979658132 @default.
- W2022898095 cites W1979671468 @default.
- W2022898095 cites W1981229662 @default.
- W2022898095 cites W1981513577 @default.
- W2022898095 cites W1982463564 @default.
- W2022898095 cites W1982959782 @default.
- W2022898095 cites W1983103738 @default.
- W2022898095 cites W1983276109 @default.
- W2022898095 cites W1983382715 @default.
- W2022898095 cites W1984249898 @default.
- W2022898095 cites W1984893053 @default.
- W2022898095 cites W1985076507 @default.
- W2022898095 cites W1986314256 @default.
- W2022898095 cites W1986321432 @default.
- W2022898095 cites W1986639469 @default.
- W2022898095 cites W1989464538 @default.
- W2022898095 cites W1993200773 @default.
- W2022898095 cites W1994101088 @default.
- W2022898095 cites W1994259177 @default.
- W2022898095 cites W1994376567 @default.
- W2022898095 cites W1994991189 @default.
- W2022898095 cites W1995260009 @default.
- W2022898095 cites W1995456570 @default.
- W2022898095 cites W1995929322 @default.
- W2022898095 cites W1996180878 @default.
- W2022898095 cites W1996328976 @default.
- W2022898095 cites W1996778689 @default.
- W2022898095 cites W1997470254 @default.
- W2022898095 cites W1997543291 @default.
- W2022898095 cites W1997682560 @default.
- W2022898095 cites W1998420541 @default.
- W2022898095 cites W1999421160 @default.
- W2022898095 cites W1999592347 @default.
- W2022898095 cites W1999844482 @default.
- W2022898095 cites W2000207419 @default.
- W2022898095 cites W2000671552 @default.
- W2022898095 cites W2000709041 @default.
- W2022898095 cites W2000825832 @default.
- W2022898095 cites W2002441983 @default.
- W2022898095 cites W2002855149 @default.
- W2022898095 cites W2003663953 @default.
- W2022898095 cites W2003770481 @default.
- W2022898095 cites W2003779757 @default.
- W2022898095 cites W2004739633 @default.
- W2022898095 cites W2004971009 @default.
- W2022898095 cites W2005046020 @default.
- W2022898095 cites W2006131501 @default.
- W2022898095 cites W2006899994 @default.
- W2022898095 cites W2006977476 @default.
- W2022898095 cites W2008123892 @default.
- W2022898095 cites W2009274176 @default.
- W2022898095 cites W2009599540 @default.
- W2022898095 cites W2010805048 @default.
- W2022898095 cites W2011005187 @default.
- W2022898095 cites W2011532463 @default.
- W2022898095 cites W2011698236 @default.