Problems with identification of vortex rings when using anemometry measurements

被引：1

作者：

Gruszka, Konrad ^{[1
]}

Durajski, Artur ^{[1
]}

Niegodajew, Pawel ^{[2
]}

Beben, Mateusz ^{[2
]}

Elsner, Witold ^{[2
]}

Gnatowska, Renata ^{[2
]}

Sofer, Michal ^{[3
]}

机构：

[1] Czestochowa Tech Univ, Fac Prod Engn & Mat Technol, Armii Krajowej 19, PL-42200 Czestochowa, Poland

[2] Czestochowa Tech Univ, Fac Mech Engn & Comp Sci, Armii Krajowej 19, PL-42200 Czestochowa, Poland

[3] VSB Tech Univ Ostrava, Fac Mech Engn, Dept Appl Mech, 17 Listopadu 15-2127, Ostrava 70833, Czech Republic

来源：

III ALTERNATIVE FUELS FORUM | 2019年 / 1398卷

关键词：

NUMERICAL-SIMULATION; KINEMATICS;

D O I：

10.1088/1742-6596/1398/1/012005

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Measurement of key vortex rings properties with the use of anemometry techniques is not so straightforward due to the angular dispersion of these structures and in consequence change of their trajectories as they move downstream. Owing to the fact that in available literature no much attention is paid to this issue, there is still a need to address this problem. In the present work we show some preliminary data which allowed to quantify the dispersion of vortex rings when these propagate over a distance up eight orifice diameters. The presented results indicate that the vortex structures generated at a certain frequency are characterized by increasing unrepeatability and angular dispersion as a function of distance from the generator. This leads to difficulties in their identification because their position in respect to the fixed position of the hot-wire probe changes.

引用

页数：6