离心浮升力对湍流混合对流换热影响的数值模拟

阳祥 1; 陶文铨 2

doi:10.7652/xjtuxb201411004

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离心浮升力对湍流混合对流换热影响的数值模拟

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- 离心浮升力对湍流混合对流换热影响的数值模拟
- Numerical Simulation of the Effect of Centrifugal Buoyancy on the Turbulent Mixed Convection Heat Transfer
- 西安交通大学学报 2014年48卷第11期页码：20-24+43
- 作者机构：
  
  国家核电技术有限公司北京研发中心,北京,100190
- 作者简介：
- 基金信息：
  
  : 2014-03-26。作者简介: 阳祥(1980—),男,工程师。基金项目: 国家自然科学基金重点资助项目(51136004)
- DOI：10.7652/xjtuxb201411004
  中图分类号： TK124
- 网络首发：2014-11-10，
  
  纸质出版：2014
- 稿件说明：
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阳祥 1, 陶文铨 2. 离心浮升力对湍流混合对流换热影响的数值模拟[J]. 西安交通大学学报, 2014,48(11):20-24+43.

Numerical Simulation of the Effect of Centrifugal Buoyancy on the Turbulent Mixed Convection Heat Transfer[J]. 2014, 48(11): 20-24+43.
阳祥 1, 陶文铨 2. 离心浮升力对湍流混合对流换热影响的数值模拟[J]. 西安交通大学学报, 2014,48(11):20-24+43. DOI： 10.7652/xjtuxb201411004.

Numerical Simulation of the Effect of Centrifugal Buoyancy on the Turbulent Mixed Convection Heat Transfer[J]. 2014, 48(11): 20-24+43. DOI： 10.7652/xjtuxb201411004.

摘要

为研究离心浮升力对旋转设备中流动与换热的影响

采用直接数值模拟方法对径向旋转轴向出流通道内充分发展湍流进行了研究。湍流雷诺数、旋转数和普朗特数分别保持为300、1.5和0.71

对格拉晓夫数分别为0、9 000、20 000以及50 000情况下的流动与换热特性进行了模拟与分析

结果表明:主流速度、温度和二次流均随离心浮升力的增加而增强

最大主流速度和最小温度出现在非稳定侧; 随离心浮升力增加

速度脉动增强

温度脉动在非稳定侧先增强再减弱

在稳定侧则是先减弱再增强; 随离心浮升力增加

稳定壁面的换热增强

非稳定壁面换热则是先增强后减弱。

Abstract

In order to investigate the influence of centrifugal buoyancy on the fluid flow and heat transfer in rotary machinery

studies have been carried out for a rotary radially outward developed turbulent flow by using direct numerical simulation(DNS)method. The turbulent Reynolds number

rotation number and Prandtl number of the flow are kept at 300

1.5

0.71

respectively

then simulations and analysis are conducted for characteristics of flow and heat transfer with Grashof number equal to 0

9 000

20 000

and 50 000

respectively. The results indicate that the mainstream velocity

temperature and secondary flow all increase with the centrifugal buoyancy forces. The maximum mainstream velocity and the minimum temperature appear in the side of the unstable wall. With the increase of centrifugal buoyancy forces

the velocity fluctuation is strengthened; the temperature fluctuation increases firstly then decreases in the side of the unstable wall

however it decreases firstly then increases in the side of the stable wall; the heat transfer performance on the stable wall is enhanced and becomes better firstly then worse on the unstable wall.

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Keywords

references

韩介勤, 杜达 S, 艾卡德 S V. 燃气轮机传热与冷却技术[M]. 程代京, 等译. 西安: 西安交通大学出版社, 2004: 305-307.

MURATA A, MOCHIZUKI S. Large eddy simulation with a dynamic subgrid-scale model of turbulent heat transfer in an orthogonally rotating rectangular duct with transverse rib turbulators[J]. Int J Heat Mass Transfer, 2000, 43(7): 1243-1259.

MURATA A, MOCHIZUKI S. Effect of centrifugal buoyancy on turbulent heat transfer in an orthogonally rotating square duct with transverse or angled rib turbulators[J]. Int J Heat Mass Transfer, 2001, 44(20): 2739-2750.

PALLARES J, DAVIDSON L. Large-eddy simulations of turbulent flow in a rotating square duct[J]. Physics of Fluids, 2000, 12(11): 2878-2894.

PALLARES J, DAVIDSON L. Large-eddy simulations of turbulent heat transfer in stationary and rotating square duct[J]. Physics of Fluids, 2002, 14(8): 2804-2816.

TYAGI M, ACHARYA S. Large eddy simulation of flow and heat transfer in rotating ribbed duct flows[J]. ASME Journal of Fluids Engineering, 2005, 127(11): 486-498.

刘难生. 旋转湍流的直接数值模拟和大涡模拟研究[D]. 合肥: 中国科学技术大学, 2003.

马良栋, 李增耀, 陶文铨. 旋转矩形通道内湍流流动与换热的直接数值模拟[J]. 西安交通大学学报, 2009, 43(5): 13-17.

MA Liangdong, LI Zengyao, TAO Wenquan. Direct numerical simulation of turbulent flow and heat transfer in a square duct rotating along its spanwise direction[J]. Journal of Xi'an Jiaotong University, 2009, 43(5): 13-17.

阳祥, 李增耀, 陶文铨. 轴向旋转通道内浮升力对湍流影响的直接模拟[J]. 西安交通大学学报, 2010, 44(9): 11-15.

YANG Xiang, LI Zengyao, TAO Wenquan. Direct numerical simulations on influences of buoyancy forces on turbulent flow[J]. Journal of Xi'an Jiaotong University, 2010, 44(9): 11-15.

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