Unsteady separation in vortex-induced boundary layers
Unsteady separation in vortex-induced boundary layers
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DOI：
10.1098/rsta.2013.0348
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发表时间：
2014-07-28
期刊：
影响因子：
5
通讯作者：
Conlisk, A. T.
中科院分区：
文献类型：
--
作者：
Cassel, K. W.;Conlisk, A. T.
本文简要回顾了与非定常边界层分离有关的分析和数值研究进展，特别是与涡诱导流动有关的进展，从而使我们对存在逆压梯度的高雷诺数表面有界流动的这一重要特征有了目前的认识。在很大程度上，涡激分离是将非定常分离的理论、数值和应用结合在一起的催化剂。特别注意的作用，教授弗兰克T。史密斯，FRS，在过去的35年里一直在这些发展中发挥作用。着重讨论了以下几点：（i）非定常分离在各种高雷诺数流动中起着关键作用;（ii）渐近方法在阐明定常和非定常分离的物理过程中起着重要作用;（iii）Frank T.史密斯曾担任催化剂的渐近方法应用于高雷诺数流动，和（iv）仍然有很多工作要做，在阐明一个完整的理论理解非定常边界层分离。
This paper provides a brief review of the analytical and numerical developments related to unsteady boundary-layer separation, in particular as it relates to vortex-induced flows, leading up to our present understanding of this important feature in high-Reynolds-number, surface-bounded flows in the presence of an adverse pressure gradient. In large part, vortex-induced separation has been the catalyst for pulling together the theory, numerics and applications of unsteady separation. Particular attention is given to the role that Prof. Frank T. Smith, FRS, has played in these developments over the course of the past 35 years. The following points will be emphasized: (i) unsteady separation plays a pivotal role in a wide variety of high-Reynolds-number flows, (ii) asymptotic methods have been instrumental in elucidating the physics of both steady and unsteady separation, (iii) Frank T. Smith has served as a catalyst in the application of asymptotic methods to high-Reynolds-number flows, and (iv) there is still much work to do in articulating a complete theoretical understanding of unsteady boundary-layer separation.