Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Joulin, Guy"'
Autor:
Joulin, Guy, Denet, Bruno
Premixed-flame wrinkling is studied via a Michelson-Sivashinsky (MS) type of evolution equation retaining the Darrieus-Landau (DL) instability, a curvature effect and a geometric nonlinearity. Here it also keeps forcing by longitudinal shearflow and
Externí odkaz:
http://arxiv.org/abs/1909.07329
Autor:
Denet, Bruno, Joulin, Guy
The nonlinear nonlocal Michelson-Sivashinsky equation for isolated crests of unstable flames is studied, using pole-decompositions as starting point. Polynomials encoding the numerically computed 2N flame-slope poles, and auxiliary ones, are found to
Externí odkaz:
http://arxiv.org/abs/1410.6037
Autor:
Joulin, Guy, Denet, Bruno
Publikováno v:
Physical Review E 89(6) 063001 (2014)
Steady premixed flames subjected to space-periodic steady forcing are studied via inhomogeneous Michelson-Sivashinsky (MS) and then Burgers equations. For both, the flame slope is posited to comprise contributions from complex poles to locate, and fr
Externí odkaz:
http://arxiv.org/abs/1406.0629
Publikováno v:
J. Stat. Mech. (2012) P10023
Using pole decompositions as starting points, the one parameter (-1 =< c < 1) nonlocal and nonlinear Zhdanov-Trubnikov (ZT) equation for the steady shapes of premixed gaseous flames is studied in the large-wrinkle limit. The singular integral equatio
Externí odkaz:
http://arxiv.org/abs/1207.5416
Autor:
Joulin, Guy, Denet, Bruno
Publikováno v:
Physics Letters A 376 (2012), pp. 1797-1802
The Zhdanov-Trubnikov equation describing wrinkled premixed flames is studied, using pole-decompositions as starting points. Its one-parameter (-1< c <1) nonlinearity generalizes the Michelson-Sivashinsky equation (c=0) to a stronger Darrieus-Landau
Externí odkaz:
http://arxiv.org/abs/1204.6565
Autor:
Denet, Bruno, Joulin, Guy
Publikováno v:
Physical Review E 84, 016315 (2011)
Localized wrinkles of thin premixed flames subject to hydrodynamic instability and geometrical stretch of uniform intensity (S) are studied. A stretch-affected nonlinear and nonlocal equation, derived from an inhomogeneous Michelson-Sivashinsky equat
Externí odkaz:
http://arxiv.org/abs/1109.2714
A theory of flame propagation in curved channels is developed within the framework of the on-shell description of premixed flames. Employing the Green function appropriate to the given channel geometry, an implicit integral representation for the bur
Externí odkaz:
http://arxiv.org/abs/0910.2011
The problem of linear stability of confined V-flames with arbitrary gas expansion is addressed. Using the on-shell description of flame dynamics, a general equation governing propagation of disturbances of an anchored flame is obtained. This equation
Externí odkaz:
http://arxiv.org/abs/0902.4326
Autor:
Joulin, Guy, Denet, Bruno
Publikováno v:
Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 78 (2008) 016315
Sivashinsky's (1977) nonlinear integro-differential equation for the shape of corrugated 1-dimensional flames is ultimately reducible to a 2N-body problem, involving the 2N complex poles of the flame slope. Thual, Frisch & Henon (1985) derived singul
Externí odkaz:
http://arxiv.org/abs/0806.4338
The problem of non-perturbative description of unsteady premixed flames with arbitrary gas expansion is solved in the two-dimensional case. Considering the flame as a surface of discontinuity with arbitrary local burning rate and gas velocity jumps g
Externí odkaz:
http://arxiv.org/abs/0707.2021