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Elektronická kniha

Combustion Waves and Fronts in Flows : Flames, Shocks, Detonations, Ablation Fronts and Explosion of Stars

Autor: Paul Clavin, Geoff Searby

Combustion is a fascinating phenomenon coupling complex chemistry to transport mechanisms and nonlinear fluid dynamics. This book provides an up-to-date and comprehensive presentation of the nonlinear dynamics of combustion waves and other non-equili

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One-dimensional dynamics of gaseous detonations revisited

Autor: Paul Clavin, Luc Vervisch, Guido Lodato, Hassan Tofaili

Publikováno v: Combustion and Flame
Combustion and Flame, 2021, 232, pp.111535. ⟨10.1016/j.combustflame.2021.111535⟩

Stability of one-dimensional gaseous detonations is revisited using both asymptotic analysis and high-order numerical simulations. The double limit of small heat release and a ratio of specific heats close to unity is considered, and attention is foc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7790f56144b2183fb56911fad7d60294
https://hal.science/hal-03653933

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A one-dimensional model for deflagration to detonation transition on the tip of elongated flames in tubes

Autor: Paul Clavin, Hassan Tofaili

Publikováno v: Combustion and Flame
Combustion and Flame, 2021, 232, pp.111522. ⟨10.1016/j.combustflame.2021.111522⟩

Deflagration-to detonation transition (DDT) of the tip of self-accelerating elongated front of laminar flames in tubes filled with gas mixtures that are very energetic is studied by employing the one-dimensional model sketched in Fig. 1b. The first p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d6618f98e162b2b7a4476d0dff79592
https://hal.science/hal-03653867

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Study of the direct initiation of spherical detonations

Autor: Paul Clavin, Raúl Hernández Sánchez, Bruno Denet

Publikováno v: The 25th International Congress of Theoretical and Applied Mechanics ICTAM
The 25th International Congress of Theoretical and Applied Mechanics ICTAM, Aug 2021, Milan, Italy
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International audience; An analysis of the direct initiation of gaseous detonations in spherical geometry is presented, for a Mach number close tounity (small heat release). In this limit, the evolution is described by a Burgers equation, modified by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::f667fda50290936085e343075966f3ca
https://hal.science/hal-03537282

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Analytical study of the direct initiation of gaseous detonations for small heat release

Autor: Bruno Denet, Paul Clavin

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2020, 897, pp.A30. ⟨10.1017/jfm.2020.359⟩
Journal of Fluid Mechanics, 2020, 897, pp.A30. ⟨10.1017/jfm.2020.359⟩

International audience; An analysis of the direct initiation of gaseous detonations in a spherical geometry is presented. The full set of constitutive equations is analysed by an asymptotic analysis in the double limit of Mach number close to unity (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eccc5d3b4fa4394bb1e98d9d297eca81
https://doi.org/10.1017/jfm.2020.359

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Nonlinear Dynamics of Shock and Detonation Waves in Gases

Autor: Paul Clavin

Publikováno v: Combustion Science and Technology
Combustion Science and Technology, Taylor & Francis, 2017, 189 (5), pp.747-775. ⟨10.1080/00102202.2016.1260562⟩
Combustion Science and Technology, 2017, 189 (5), pp.747-775. ⟨10.1080/00102202.2016.1260562⟩

A review of analytical studies for the formation of triple points on shock fronts and for the cellular structures of gaseous detonations is presented. The analyses concern two opposite limiting cases, strong and weak shocks in the Newtonian approxima

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f4acfdf0f85225ca22fad731cfa53a9
https://doi.org/10.1080/00102202.2016.1260562

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Decay of plane detonation waves to the self-propagating Chapman–Jouguet regime

Autor: Bruno Denet, Paul Clavin

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2018, 845, pp.170-202. ⟨10.1017/jfm.2018.237⟩
Journal of Fluid Mechanics, 2018, 845, pp.170-202. ⟨10.1017/jfm.2018.237⟩

A theoretical study of the decay of plane gaseous detonations is presented. The analysis concerns the relaxation of weakly overdriven detonations toward the Chapman–Jouguet (CJ) regime when the supporting piston is suddenly arrested. The initial co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e510faf8760f23b9c32e653b7f98c17
https://hal.archives-ouvertes.fr/hal-01799922

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Numerical Study of Smoothly Perturbed Shocks in the Newtonian Limit

Autor: Luc Vervisch, Paul Clavin, Guido Lodato

Publikováno v: Flow, Turbulence and Combustion
Flow, Turbulence and Combustion, 2017, 99 (3-4), pp.887-908. ⟨10.1007/s10494-017-9830-1⟩
Flow, Turbulence and Combustion, Springer Verlag (Germany), 2017, 99 (3-4), pp.887-908. ⟨10.1007/s10494-017-9830-1⟩

Previous weakly nonlinear analyses of strong shocks in the Newtonian limit have shown that the main characteristics of the cellular pattern of detonations, namely the network of triple points propagating in the transverse direction, are associated wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9c5f240655fcfb01ea6d83b6009cb93
https://hal-normandie-univ.archives-ouvertes.fr/hal-01657560

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Quasi-isobaric ignition near the flammability limits. Flame balls and self-extinguishing flames

Autor: Paul Clavin

Publikováno v: Combustion and Flame
Combustion and Flame, Elsevier, 2017, 175, pp.80-90. ⟨10.1016/j.combustflame.2016.05.019⟩
Combustion and Flame, 2017, 175, pp.80-90. ⟨10.1016/j.combustflame.2016.05.019⟩

Asymptotic analyses are presented for spherical flame kernels (steady solutions) and slow flame expansion in mixtures near and beyond the flammability limits corresponding to a molecular diffusion coefficient of the limiting species greater than the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a522087e2da8ed339021531ee5d93c8b
https://hal.archives-ouvertes.fr/hal-01792841

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