Transient lift force on a blade during cutting of a vortex with non-zero axial flow
Transient lift force on a blade during cutting of a vortex with non-zero axial flow
复制标题
非零轴流涡流切割过程中叶片上的瞬态升力
DOI:
10.1017/jfm.2017.188
复制
发表时间:
2017
影响因子:
3.7
通讯作者:
Marshall, Jeffrey S.
中科院分区:
文献类型:
--
作者:
Saunders, D. Curtis;Marshall, Jeffrey S.
The problem of orthogonal penetration of a blade into the core of a vortex with non-zero axial flow was studied using a combination of scaling theory, a heuristic plug-flow model and full Navier–Stokes simulations. The particular focus of this paper was to understand the mechanics of the transient lift force that occurs during the initial penetration of the blade leading edge into the vortex core, and the relationship of this transient force to the steady-state lift force that develops due to the difference in vortex core radius over the blade surface. The three modelling approaches all lead to the conclusion that the maximum value of the lift coefficient for the transient blade penetration force is proportional to the impact parameter and inversely proportional to the axial flow parameter. This observation is used to develop a simple expression that collapses the predictions of the full Navier–Stokes simulations for lift coefficient over a wide range of parameter values.
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影响因子:
1.5
作者:
Boeing Vertol Co. amp;R. Smith;Eustis.
通讯作者:
Eustis.
DOI:
10.1017/s0001924000064216
发表时间:
1999
期刊:
The Aeronautical Journal (1968)
影响因子:
--
作者:
C. Doolan;F. Coton;R. Galbraith
通讯作者:
R. Galbraith
影响因子:
3.7
作者:
Saunders, D. Curtis;Marshall, Jeffrey S.
通讯作者:
Marshall, Jeffrey S.
影响因子:
3.7
作者:
M. Shelley;D. Meiron;S. Orszag
通讯作者:
M. Shelley;D. Meiron;S. Orszag
影响因子:
3.7
作者:
J. Marshall;J. R. Grant
通讯作者:
J. R. Grant