LBE simulation of coherent vortex motion and heat transfer in jets of cross flow

被引：4

作者：

Gui, Nan ^{[1
]}

Xu, Wenkai ^{[1
]}

Ge, Liang ^{[1
]}

Fan, Jianren ^{[2
]}

机构：

[1] China Univ Petr, Dept Thermal Energy Engn, Coll Mech & Transportat Engn, Beijing, Peoples R China

[2] Zhejiang Univ, Dept Energy Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310003, Zhejiang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS | 2014年 / 28卷 / 6-10期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

coherent structure; jet; heat transfer; lattice Boltzmann equation; cross flow; IMPINGING JET; MODEL;

D O I：

10.1080/10618562.2014.948427

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Lattice Boltzmann equation method is used to simulate the coherent vortex motions and interactions and the heat transfer characteristics of jets in cross flow (JICFs) via TD2G9 model. After validation, the characteristics of cross flow under different Reynolds numbers are illustrated, including the mean profiles, the Reynolds stress tensor, the vortex and temperature fields, the temperature gradients near the walls, and the coherent correlation of vortex motions. The results show that the velocity profiles in JICF can be characterized by three basic regions, which are mainly caused by the mergence of JICF with the main flow. The temperature gradient near the walls can also be categorized by four basic regions, which are caused mainly by the impulse of JICFs too. Coherent vortex motions are found in JICF for Re = 3000, which are proved by strong periodic correlation of flow variables over a fixed area.

引用

页码：383 / 392

页数：10

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