Description and Prediction of Roughness-Induced Transition in Swept-Wing Boundary Layers

被引：0

作者：

Boiko, Andrey V. ^{[1
]}

Borodulin, Vladimir I. ^{[1
]}

Ivanov, Andrey V. ^{[1
]}

Kirilovskiy, Stanislav V. ^{[2
]}

Mischenko, Dmitry A. ^{[3
]}

Poplavskaya, Tatiana V. ^{[2
]}

机构：

[1] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Siberian Branch, Dept Aerophys Studies Subson Flows, Novosibirsk 630090, Russia

[2] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Dept Phys Problems Flow Control, Siberian Branch, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Khristianovich Inst Theoret & Appl Mech, Dept Phys & Math Modeling Inhomogeneous Flows, Siberian Branch, Novosibirsk 630090, Russia

来源：

AIAA JOURNAL | 2025年

基金：

俄罗斯科学基金会;

关键词：

Laminar Turbulent Transition; Boundary Layer Transition; Cross-Flow Velocity; Drag Prediction; Surface Roughness; FLOW; STABILITY; RECEPTIVITY; TURBULENCE;

D O I：

10.2514/1.J064370

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

By means of the original method of quantitative thermography, an extensive experimental database on the position, length, and other characteristics of laminar-turbulent transition caused by the development of stationary crossflow vortices initiated by different roughness configurations with documented characteristics was obtained. Accompanying numerical base-flow computations were carried out with commercial gas dynamic software coupled with house-made laminar-turbulent transition module. The experimental and numerical data were used to determine threshold N-factors of transition and turbulence onsets in a range of chord-based Reynolds numbers (flow velocities) and different roughness configurations. The threshold N-factors are presented as functions of surface roughness height. A comparison with findings of other researches is given.

引用

页数：12

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