Fluid flow lifting a body from a solid surface
Fluid flow lifting a body from a solid surface
复制标题
流体流动将物体从固体表面升起
DOI:
10.1098/rspa.2018.0286
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Balta S
中科院分区:
文献类型:
--
作者:
Balta S
If a body is at rest on horizontal ground and a sudden horizontal flow of fluid is applied, the body either remains on the ground (rocking, rolling, sliding or spinning) or is lifted off impulsively. This lift-off is followed by a return to the ground or by a fly-away in the sense of continued departure from the ground. Related phenomena arise in the lift-off of an air vehicle from, effectively, moving ground. The present investigation seeks fairly precise mechanistic conditions under which lift-off and subsequent return or fly-away occur for a thin body or more generally for any thin gap of fluid between a body and the ground. Nonlinear fluid–solid interaction takes place in which the motion of the body and the surrounding fluid affect each other. Small-time analysis on lift-off and a numerical study are presented, followed by large-time analysis showing a critical flow speed for fly-away for any shape of the body. The changes in ground effect, from being dominant during lift-off to diminishing in fly-away, are explored together with relevant applications.
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DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Samire Balta
通讯作者:
Samire Balta
DOI:
--
发表时间:
2011
期刊:
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子:
--
作者:
F. Smith;Phillip Lawrence Wilson
通讯作者:
Phillip Lawrence Wilson
影响因子:
3.7
作者:
I. Hewitt;N. Balmforth;J. McElwaine
通讯作者:
J. McElwaine
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
M. Aköz
通讯作者:
M. Aköz
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
J. Foucaut;M. Stanislas
通讯作者:
M. Stanislas