CRITERIA FOR BOUNDARY LAYER TRANSITION

被引：0

作者：

Becker, Stefan ^{[1
]}

McEligot, Donald M. ^{[1
]}

Walsh, Edmond ^{[1
]}

Laurien, Eckart ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Lehrstuhl Prozessmaschinen & Anlangentech iPAT, D-91058 Erlangen, Germany

来源：

PROCEEDINGS OF THE ASME TURBO EXPO 2011, VOL 5, PTS A AND B | 2012年

关键词：

PRESSURE-GRADIENT; FREESTREAM TURBULENCE; BYPASS TRANSITION; FLOW; SUBJECT; STRESS; LDA;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

New results are deduced to assess the validity of proposed transition indicators when applied to situations other than boundary layers on smooth surfaces. The geometry employed utilizes a two-dimensional square rib to disrupt the boundary layer flow. The objective is to determine whether some available criteria are consistent with the present measurements of laminar recovery and transition for the flow downstream of this rib. For the present data - the proposed values of thresholds for transition in existing literature that are based on the freestream turbulence level at the leading edge are not reached in the recovering laminar run but they are not exceeded in the transitioning run either. Of the pointwise proposals examined, values of the suggested quantity were consistent for three of the criteria; that is, they were less than the threshold in laminar recovery and greater than it in the transitioning case.

引用

页码：1817 / 1833

页数：17

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