LARGE EDDY SIMULATION OF FLOW OVER A HEMISPHERICAL OBSTACLE WITHIN A CYLINDRICAL TUBE

被引：0

作者：

Sharma, Amit ^{[1
]}

Ghia, Urmila ^{[1
]}

Turkevich, Leonid A. ^{[2
]}

机构：

[1] Univ Cincinnati, Dept Mech & Mat Engn, Cincinnati, OH 45221 USA

[2] Ctr Dis Control & Prevent, Natl Inst Occupat Safety & Hlth, Cincinnati, OH 45226 USA

来源：

PROCEEDINGS OF THE ASME 2020 FLUIDS ENGINEERING DIVISION SUMMER MEETING (FEDSM2020), VOL 3 | 2020年

关键词：

SEPARATED FLOW; WIND PRESSURES; TURBULENT;

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：

Motivated by recent experiments on the dustiness of nanoscale powders, this research addresses the modeling of powder aerosolization within the Venturi Dustiness Test (VDT) apparatus. As a first step in such modeling, we investigate the flow over a hemispherical (powder) hill, at the operating Reynolds number Re similar to 20,000, in the powder holding tube attached to the VDT. The powder holding tube is idealized as a cylindrical tube, obstructed by a hemispherical (powder) hill. The upstream flow field is characterized by the presence of a horse-shoe vortex, formed due to the separation of the boundary layer from the wall of the tube. A stagnation point occurs at the lower

引用

页数：10

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