Interface models for three-dimensional Rayleigh–Taylor instability
Interface models for three-dimensional Rayleigh–Taylor instability
复制标题
三维瑞利泰勒不稳定性的界面模型
DOI:
10.1017/jfm.2023.98
复制
发表时间:
2023
影响因子:
3.7
通讯作者:
Shkoller, Steve
中科院分区:
文献类型:
--
作者:
Pandya, Gavin;Shkoller, Steve
We derive interface models for three-dimensional Rayleigh–Taylor instability (RTI), making use of a novel asymptotic expansion in the non-locality of the fluid flow. These interface models are derived for the purpose of studying universal features associated with RTI such as the Froude number in single-mode RTI, the predicted quadratic growth of the interface amplitude under multi-mode random perturbations, the optimal (viscous) mixing rates induced by the RTI and the self-similarity of horizontally averaged density profiles and the remarkable stabilization of the mixing layer growth rate which arises for the three-fluid two-interface heavy–light–heavy configuration, in which the addition of a third fluid bulk slows the growth of the mixing layer to a linear rate. Our interface models can capture the formation of small-scale structures induced by severe interface roll-up, reproduce experimental data in a number of different regimes and study the effects of multiple interface interactions even as the interface separation distance becomes exceedingly small. Compared with traditional numerical schemes used to study such phenomena, our models provide a computational speed-up of at least two orders of magnitude.
登录
查看更多内容
影响因子:
1.6
作者:
R. Granero;S. Shkoller
通讯作者:
S. Shkoller
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
L. Székelyhidi
通讯作者:
L. Székelyhidi
DOI:
10.1016/j.jcp.2019.109177
发表时间:
2019-04
期刊:
J. Comput. Phys.
影响因子:
--
作者:
Raaghav Ramani;S. Shkoller
通讯作者:
Raaghav Ramani;S. Shkoller
影响因子:
3.7
作者:
J. Jacobs;S. Dalziel
通讯作者:
S. Dalziel
影响因子:
2
作者:
By J. Thomas Beale;A. Majda
通讯作者:
By J. Thomas Beale;A. Majda