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Mechanism of fast f...
Mechanism of fast flame acceleration in cylindrical tubes with obstacles
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- Akkerman, V. (författare)
- Princeton University
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- Law, C. K. (författare)
- Princeton University
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- Valiev, D. M. (författare)
- Umeå universitet,Umeå University
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- Bychkov, V. (författare)
- Umeå universitet,Umeå University
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- Eriksson, Lars-Erik, 1950 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa färre...
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(creator_code:org_t)
- ISBN 9781615676682
- 2009
- 2009
- Engelska.
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Ingår i: Fall Meeting of the Eastern States Section of the Combustion Institute 2009; College Park; United States; 18 October 2009 through 21 October 2009. - 9781615676682 ; , s. 301-307
- Relaterad länk:
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https://research.cha...
Abstract
Ämnesord
Stäng
- The physical mechanism of fast flame acceleration in tubes with obstacles is explained by recognizing that delayed burning between the obstacles creates a powerful jet flow which drives the acceleration. It is demonstrated theoretically and computationally that this mechanism is unlimited in time and independent of the Reynolds number, and it is much stronger and qualitatively different from the classical Shelkin mechanism of flame acceleration due to wall friction. As long as the gas compression is weak, the flame accelerates exponentially, with an enormous acceleration rate. We present formulae describing evolution of the flame tip, as well as its velocity and acceleration rate. Furthermore, it is shown that flames accelerate noticeably stronger in the axisymmetric cylindrical geometry as compared to the planar one.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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