Transport of inertial particles in turbulent boundary layers

被引：2
|
作者：
Sardina, Gaetano [1 ]
Brandt, Luca [1 ]
Schlatter, Philipp [1 ]
Casciola, Carlo Massimo
Henningson, Dan S. [1 ]
机构：
[1] KTH Mech, Linne FLOW Ctr, SE-10044 Stockholm, Sweden
来源：
13TH EUROPEAN TURBULENCE CONFERENCE (ETC13): PARTICLES IN TURBULENCE, TRANSPORT PROCESSES AND MIXING | 2011年 / 318卷
关键词：
D O I：
10.1088/1742-6596/318/5/052020
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A direct numerical simulations (DNS) of a spatially evolving particle-laden turbulent boundary layer has been performed to study turbophoresis effects in presence of changing local Stokes number. The data show a preferential particle localization near the wall at the streamwise position where the local Stokes number St(+) assumes a value close to 25, similarly to that found in channel flow. Note that a complete steady state will never been reached for the particle concentration in this kind of flow. The effects of the seeding and of preferential sampling of the fluid velocity will be described as well.
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页数：9
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