Numerical and experimental investigation of swirling flow in a conical diffuser

被引：4
|
作者：
David, Stefan [1 ]
Pavel, Zubik [2 ]
Martin, Hudec [1 ]
Pavel, Rudolf [1 ]
机构：
[1] Brno Univ Technol, Fac Mech Engn, Tech 2896 2, Brno 61669, Czech Republic
[2] Brno Univ Technol, Fac Civil Engn, Brno 60200, Czech Republic
来源：
EFM14 - EXPERIMENTAL FLUID MECHANICS 2014 | 2015年 / 92卷
关键词：
VORTEX BREAKDOWN;
D O I：
10.1051/epjconf/20159202085
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The decelerated swirling flow often breaks down into helical structure which is unstable and causes unsteady velocity and pressure fields. The numerical and experimental investigation of this flow pattern is carried out on the experimental apparatus consisting of the swirl generator (producing a strong swirling flow) and the transparent conical diffuser (where the helical structure can be observed). The open source CFD software OpenFOAM employing realizable k-epsilon turbulence model is used for the numerical simulations. The experimental measurements are focused on LDA measurements of velocity profiles in the diffuser cross-sections. Agreements between numerical end experimental results are discussed.
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页数：5
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