[1]官燕玲,江 超,肖 洋,等.热量表流量计量稳定性的流场动态数值分析[J].西安建筑科技大学学报:自然科学版,2015,47(04):598-604.[doi:10.15986/j.1006-7930.2015.04.024]
　GUAN Yanling,JIANG Chao,XIAO Yang,et al.Numerical analysis of dynamic flow field for the measurement stability of pillar type ultrasonic heat meter[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(04):598-604.[doi:10.15986/j.1006-7930.2015.04.024]
点击复制

热量表流量计量稳定性的流场动态数值分析()
分享到：

西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年04期
页码:
598-604
栏目:
出版日期:
2015-08-31

文章信息/Info

Title:
Numerical analysis of dynamic flow field for the measurement stability of pillar type ultrasonic heat meter
文章编号:
1006-7930(2015)04-0598-7
作者:
官燕玲1; 江 超1; 肖 洋1; 2; 张宇昊1; 3
1. 长安大学环境科学与工程学院，陕西 西安 710054； 2. 成都基准方中建筑设计有限公司西安分公司，陕西 西安 710054；3. 信息产业电子第十一设计研究院科技工程股份有限公司西安分院，陕西 西安 710100
Author(s):
GUAN Yanling1;  JIANG Chao1;  XIAO Yang1; 2;  ZHANG Yuhao1; 3
1. College of Environment Science and Engineering, Chang’an University, Xi’an 710054, China; 2. Chengdu JZFZ Architectural Design Corporation Limited, Xi’an branch, Xi’an 710054, China; 3. Electronics Eleventh Design & Research Institute Scientific and Technological Engineering Corporation Limited, Xi’an branch, Xi’an 710100, China
关键词:
超声波热量表 流量计量 流量修正系数 数值分析
Keywords:
ultrasonic heat meter;  flow measurement;  stability;  flow rate correction coefficient;  dynamic numerical analysis
分类号:
TH7
DOI:
10.15986/j.1006-7930.2015.04.024
文献标志码:
A
摘要:
对一款DN25的立柱反射体超声波热量表，应用动态数值方法，分析了水流从初场到充分发展的动态过程、流场的非定常性等，在此基础上对热量表流量计量的关键参数即流量修正系数K值的稳定性进行了研究．分析表明，该款热量表因流量的变化再达到一个新的稳定工况所用时间很短；无论流量大小，超声波传播路径的瞬时线平均速度随时间均比较稳定；对
应流量的改变，K值会发生变化．在热量表的安装方面，研究表明热量表入口直管长度对K值的稳定性影响较大，出口的直管段长度对其影响不大．
Abstract:
The dynamic characteristics of a DN25 travel time ultrasonic heat meter were investigated by means of large-eddy simulation. The focus on the dynamic process from the initial flow field to the fully developed flow field and the unsteady characteristics of the flow field, the reliability of key parameter in flow measurement of heat meter, K-factor, were researched. The results showed that it takes a short period of time to achieve a new steady state after a flow rate variation for this heat meter. The instantaneous mean linear velocities along the ultrasonic transmission routes are stable regardless of the magnitude of the flow rate. There remain uncertainties of K-factor corresponding to the variations of the flow rate. As for the installation of heat meter, research indicated that the influence of upstream straight pipe length on the stability of K-factor is remarkable while that of downstream straight pipe length is not significant.

参考文献/References:

[1] SANDERSONM L, YEUNG H. Guidelines for the use of ultrasonic non-invasive metering techniques[J]. Flow Measurement and Instrumentation. 2002, 13( 4): 125-142.
[2] 强发红, 毛协柱. 时差法超声流量计的应用技术[J].石油化工自动化, 2001(1): 60-64.
QIANG Fahong, MAO Xiezhu. Application technology of ultrasonic flowmeter under time-difference method[J]. Automation inpetro-chemical industry, 2001(1): 60-64.
[3] 贺胜, 彭黎辉, 仲里敏. 基于CFD的超声波流量计最优声道位置研究[J]. 仪器仪表学报. 2009, 30(4): 852-856.
HE Sheng, PENG Lihui, ZHONG Limin. Computational fluid dynamics based sound path optimization for ultrasonic flow meter[J]. Chinese Journal of Scientific Instrument, 2009, 30(4): 852-856.
[4] 沈芳. DN25户用热量表基表性能的研究[D]. 济南: 山东大学, 2011.
SHEN Fang. Study on the performance of DN25 household heat meter[D]. Jinan: Shandong University, 2011.
[5] 贾晓荷. 单圆柱及双圆柱绕流的大涡模拟[D]. 上海: 上海交通大学, 2008.
JIA Xiaohe. Large eddy simulation of Single cylinder and double cylinder of streaming[D]. Shanghai: Shanghai Jiao Tong University, 2008.
[6] 陈晓春. 基于并行计算的大涡模拟方法及其工程应用基础研究[D]. 西安: 西安建筑科技大学, 2004.
CHEN Xiaochun. Large eddy simulation method based on parallel computing and its engineering application in basic research[D]. Xi’an: Xi’an University Of Architecture and Technology, 2004.
[7] 张兆顺, 崔桂香, 许春晓. 湍流大涡数值模拟的理论与应用[M]. 北京: 清华大学出版社, 2008.
ZHANG Zhaoshun, CUI Guixiang, XU Chunxiao. Theory and application of numerical simulation of turbulent large eddy[M]. Beijing: Tsinghua University press, 2008.
[8] 岑敏锐. 超声波在液体中的传播速度与温度的关系[J].物理实验. 2008, 28(5): 39-41.
CEN Minrui. The relationship between velocity and temperature in liquid of ultrasonic[J]. Physical experiment. 2008, 28(5): 39-41.
[9] 中华人民共和国建设部. CJ 128-2007 热量表[S]. 北京: 中国标准出版社, 2008.
The ministry of construction of the People’s Republic of China. CJ 128-2007 Heat meter[S]. Beijing: China Standard Press, 2008.
[10] 国家质量技术监督局. JJG225-2001 热能表[S]. 北京:中国标准出版社, 2001.
National Bureau of quality and technical supervision. JJG225-2001 Heat meter[S]. Beijing: China Standard Press, 2001.

备注/Memo

备注/Memo:
收稿日期：2014-11-11 修改稿日期：2015-05-25
基金项目：陕西省科学技术研究发展计划项目（2013K13-02-01）；陕西省住房和城乡建设厅科学技术计划项目（2014-04）
作者简介：官燕玲(1957-)，女，教授，博士，主要从事室内热环境，建筑节能方面的研究．E-mail: guanyl1@163.com
更新日期/Last Update: 2015-10-31