Direct numerical simulations of the turbulent annular jet with different diameter ratio

被引：1

作者：

Ryzhenkov, V ^{[1
,2
]}

Mullyadzhanov, R. ^{[1
,2
]}

机构：

[1] Inst Thermophys SB RAS, Novosibirsk, Russia

[2] Novosibirsk State Univ, Novosibirsk, Russia

来源：

ALL-RUSSIAN CONFERENCE XXXIV SIBERIAN THERMOPHYSICAL SEMINAR, DEDICATED TO THE 85TH ANNIVERSARY OF ACADEMICIAN A. K. REBROV | 2018年 / 1105卷

关键词：

FLOW; REGION; WAKE;

D O I：

10.1088/1742-6596/1105/1/012007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We performed direct numerical simulations (DNS) of the turbulent annular jet flow for the Reynolds number Re = 8900 with three different values of the inner-to-outer diameter ratio (a = d / D = 0.3, 0.5, 0.7). The time-averaged velocity fields and fluctuations were analyzed. The low aspect ratio results in the shortest recirculation zone while for high a value the stagnation point features high level of turbulent kinetic energy. This is the evidence of the accompanying low-frequency oscillations of the recirculation zone.

引用

页数：6

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