Large-eddy simulations of variable-density turbulent jets

被引：0
|
作者：
Ivashchenko, V [1 ,2 ]
Ryzhenkov, V [1 ,2 ]
Mullyadzhanov, R. [1 ,2 ]
机构：
[1] Inst Thermophys SB RAS, Lavrentyeva 1, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Pirogova 2, Novosibirsk 630090, Russia
来源：
3RD ALL-RUSSIAN SCIENTIFIC CONFERENCE THERMOPHYSICS AND PHYSICAL HYDRODYNAMICS WITH THE SCHOOL FOR YOUNG SCIENTISTS | 2018年 / 1128卷
基金：
俄罗斯基础研究基金会;
关键词：
turbulence; jet flow; variable density; mixing; NUMERICAL-SIMULATION;
D O I：
10.1088/1742-6596/1128/1/012016
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We perform Large-eddy simulations (LES) of turbulent variable-density jets. A fully developed turbulent pipe flow of air at the Reynolds number of Re = 5300 enters a large reservoir of air, helium or carbon dioxide. The impulsely starting jets as well as the fully developed stationary flows are considered. In the first case we show that the air stream propagates faster in the light medium of helium as compared to other gas pairs, while in the fully developed case the same helium-air pair exhibits the lowest level of turbulent fluctuations.
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页数：7
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