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[1]程文洁,顾伯勤,邵春雷.不同黏度下熔盐泵非定常流动的数值分析[J].南京工业大学学报(自然科学版),2015,37(05):102-107.[doi:10.3969/j.issn.1671-7627.2015.05.017]
 CHENG Wenjie,GU Boqin,SHAO Chunlei.Numerical analysis of unsteady flow in molten salt pump for different viscosities[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2015,37(05):102-107.[doi:10.3969/j.issn.1671-7627.2015.05.017]
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不同黏度下熔盐泵非定常流动的数值分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
37
期数:
2015年05期
页码:
102-107
栏目:
出版日期:
2015-09-10

文章信息/Info

Title:
Numerical analysis of unsteady flow in molten salt pump for different viscosities
文章编号:
1671-7627(2015)05-0102-06
作者:
程文洁顾伯勤邵春雷
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
CHENG WenjieGU BoqinSHAO Chunlei
College of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
熔盐泵 黏度 非定常流动 静压分布 相对速度
Keywords:
molten salt pump viscosity unsteady flow distribution of static pressure relative velocity
分类号:
TH311
DOI:
10.3969/j.issn.1671-7627.2015.05.017
文献标志码:
A
摘要:
为了研究熔盐泵高温下的内部流动状态,采用三维雷诺时均(Navier-Stokes)方程和标准k-ε湍流模型,对熔盐泵内部非定常流动进行了数值模拟,分别分析了不同黏度和不同叶片与蜗舌之间的夹角(α)下泵内流场的变化情况。结果表明:在设计流量下,熔盐泵出口静压受黏度影响不大; 压力随α角的变化规律几乎不受黏度影响; 叶轮内流场整体呈现比较理想的流动状态,吸力面速度较大; 低速区集中在叶片压力面中间位置,面积大小同时受到黏度和α角的影响,当α为35°时,最靠近蜗舌的流道内出现最大低速区。该研究可为揭示熔盐泵内部流动现象提高熔盐泵水力性能提供参考。
Abstract:
To study the flow in molten salt pump at high temperatures,the unsteady flow in molten salt pump was numerically analyzed based on the three-dimensional Reynolds-Averaged Navier-Stokes equations and the standard k-ε turbulence model.The internal flow fields with different viscosities and different blade-volute angles α were analyzed.Results showed that,in the designed flow,the static pressure at the outlet of molten salt pump was little affected by viscosity. The regularity of pressure change with the angle α was also little affected by viscosity. The flow field in the impeller presented ideal state and the velocity on the suction surface was relatively high. The low velocity zone appeared in the middle position of the blade pressure surface and was affected by both viscosity and the blade-volute angle(α).When the angle α was 35°,the largest low velocity zone appeared in the impeller passage nearest the volute tongue.The research provided a reference for revealing the flow phenomenon and improving the hydraulic performances of the molten salt pump.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-05-12
基金项目:国家自然科学基金(51306087); 江苏省自然科学基金(BK2012430)
作者简介:程文洁(1982—),女,江苏连云港人,博士生,主要研究方向为流体工程与密封技术; 顾伯勤(联系人),教授,E-mail:bqgu@njtech.edu.cn.
引用本文:程文洁,顾伯勤,邵春雷.不同黏度下熔盐泵非定常流动的数值分析[J].南京工业大学学报:自然科学版,2015,37(5):102-107..
更新日期/Last Update: 2015-09-20