[1]李凯,张林华*,崔永章,等.旋转螺旋扭带管内传热与阻力性能的数值模拟[J].山东建筑大学学报,2013,(02):163-167.
 Li Kai,Zhang Linhua*,Cui Yongzhang,et al.Numerical simulation of heat transfer and resistance performance in a rotating twisted-tape-inserted tube[J].Journal of Shandong jianzhu university,2013,(02):163-167.
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旋转螺旋扭带管内传热与阻力性能的数值模拟()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2013年02期
页码:
163-167
栏目:
工程实践
出版日期:
2013-04-15

文章信息/Info

Title:
Numerical simulation of heat transfer and resistance performance in a rotating twisted-tape-inserted tube
文章编号:
1673-7644(2013)02-0163-05
作者:
李凯1张林华*123崔永章23曲云霞23朱艳艳1
1.山东建筑大学 热能工程学院,山东 济南 250101;2.山东建筑大学 可再生能源建筑利用技术省部共建教育部重点实验室,山东 济南 250101;3.山东建筑大学 山东省建筑节能技术重点实验室,山东 济南 250101
Author(s):
Li Kai1 Zhang Linhua*123Cui Yongzhang23 et al.
1. Key Laboratory of Renewable Energy Utilization Technology in Building of National Education Ministry, Shandong Jianzhu University, Jinan 250101, China; 3. Shandong Provincial Key Laboratory of Building Energy-Saving Technology, Jinan 250101, China
关键词:
生物质旋转扭带数值模拟
Keywords:
biomass rotating twisted tape numerical simulation
分类号:
TK124
文献标志码:
A
摘要:
为了研究生物质锅炉换热管内插入外源驱动旋转的扭带对传热及阻力性能的影响,建立了不同扭曲比的扭带在不同转速时管内流体流动的三维物理模型。采用RNG - 湍流模型对传热过程进行模拟,得出了旋转扭带管内流体的换热及阻力特性。结果表明:旋转扭带提高了管内流体的轴向速度和切向速度;转速为0~10 rpm时,转速越大、扭曲比越小,表面传热系数越大,阻力损失也越大;扭曲比在2.06~5.1的扭带,综合评价因子在1.13~1.41之间,扭曲比为3.15的扭带综合评价因子最高。
Abstract:
In order to study the heat transfer and resistance performance effect of rotating twisted-tape-inserted tube of the biomass boiler, a three-dimensional fluid flow model of rotating twisted tape is presented with different angular velocity and distorted ratio. The Renormalized Group (RNG) ? ?turbulence model is used to simulate the process of heat transfer for getting the heat transfer and resistance performance of rotating twisted-tape-inserted tube. The result shows that rotating twisted tape increases the axial velocity and tangential velocity of the fluid. When the rotation speed is 0-10 rpm, the higher the speed is and the smaller the twist ratio is, the higher the surface heat transfer coefficient is and the more the resistance loss is. The comprehensive evaluation factor of the twisted tapes with the twist ratio of 2.06-5.1 is 1.13-1.41, while the comprehensive evaluation factor of the twisted tape with the twist ratio of 3.15 is highest.

相似文献/References:

[1]胡爱娟,刘杨,袁清泉,等.基于RBF神经网络生物质半焦产量的预测[J].山东建筑大学学报,2012,(02):238.
 HU Ai-juan,LIU Yang,YUAN Qing-quan,et al.Prediction of the yield of biomass semi-coke based on RBF neural network[J].Journal of Shandong jianzhu university,2012,(02):238.
[2]任敏娜,崔永章,李晓,等.八种生物质颗粒燃烧特征分析[J].山东建筑大学学报,2012,(03):298.
 REN Min-na,CUI Yong-zhang,LI Xiao,et al.Analysis of the characteristics of eight kinds of biomass pellet combustion[J].Journal of Shandong jianzhu university,2012,(02):298.

备注/Memo

备注/Memo:
收稿日期:2012-12-18
基金项目:山东省科技计划项目(2011GNC11401);济南市科技计划项目(201102039)
作者简介:李凯(1987-),男,在读硕士,主要从事能源转换与利用技术研究.Email:coolerkai@163.com
*通讯作者:张林华(1965-),男,教授,博士,主要从事建筑节能及可再生能源利用技术研究.Email:zlinhua@yahoo.cn
更新日期/Last Update: 2013-06-13