Stability of receding traveling waves for a fourth order degenerate parabolic free boundary problem
Stability of receding traveling waves for a fourth order degenerate parabolic free boundary problem
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四阶简并抛物线自由边界问题的后退行波稳定性
DOI:
10.1016/j.aim.2019.01.028
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发表时间:
2019
影响因子:
1.7
通讯作者:
N. Masmoudi
中科院分区:
文献类型:
--
作者:
M. V. Gnann;S. Ibrahim;N. Masmoudi
Consider the thin-film equation h t+(h h y y y) y= 0 with a zero contact angle at the free boundary, that is, at the triple junction where liquid, gas, and solid meet. Previous results on stability and well-posedness of this equation have focused on perturbations of equilibrium-stationary or self-similar profiles, the latter eventually wetting the whole surface. These solutions have their counterparts for the second-order porous-medium equation h t−(h m) y y= 0, where m> 1 is a free parameter. Both porous-medium and thin-film equation degenerate as h↘ 0, but the porous-medium equation additionally fulfills a comparison principle while the thin-film equation does not. In this note, we consider traveling waves h= V 6 x 3+ ν x 2 for x≥ 0, where x= y− V t and V, ν≥ 0 are free parameters. These traveling waves are receding and therefore describe de-wetting, a phenomenon genuinely linked to the fourth-order nature of the thin-film equation and not encountered in the porous-medium case as it violates the comparison principle. The linear stability analysis leads to a linear fourth-order degenerate-parabolic operator for which we prove maximal-regularity estimates to arbitrary orders of the expansion in x in a right-neighborhood of the contact line x= 0. This leads to a well-posedness and stability result for the corresponding nonlinear equation. As the linearized evolution has different scaling as x↘ 0 and x→∞, the analysis is more intricate than in related previous works. We anticipate that our approach is a natural step towards investigating other situations in which the comparison principle is violated, such as droplet rupture.
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影响因子:
2.4
作者:
M. V. Gnann;M. Petrache
通讯作者:
M. Petrache
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Clemens Kienzler
通讯作者:
Clemens Kienzler
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
E. Carlen;S. Ulusoy
通讯作者:
S. Ulusoy
影响因子:
2
作者:
M. V. Gnann
通讯作者:
M. V. Gnann
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
R. McCann;Christian Seis
通讯作者:
Christian Seis