[1]蒋光彪,钟 海,阳 杰,等.基于FLUENT和集群对扩压器流场的并行数值模拟及分析[J].南京师范大学学报(工程技术版),2016,16(02):047.[doi:10.3969/j.issn.1672-1292.2016.02.008]
 Jiang Guangbiao,Zhong Hai,Yang Jie,et al.Parallel Numerical Simulation and Analysis of the Flow Field ofDiffuser Based on FLUENT Software and Cluster[J].Journal of Nanjing Normal University(Engineering and Technology),2016,16(02):047.[doi:10.3969/j.issn.1672-1292.2016.02.008]
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基于FLUENT和集群对扩压器流场的并行数值模拟及分析
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
16卷
期数:
2016年02期
页码:
047
栏目:
能源与动力工程
出版日期:
2016-06-30

文章信息/Info

Title:
Parallel Numerical Simulation and Analysis of the Flow Field ofDiffuser Based on FLUENT Software and Cluster
作者:
蒋光彪钟 海阳 杰殷水平谢洁飞
(1.中南林业科技大学土木工程与力学学院,湖南 长沙 410004)(2.中南林业科技大学工程流变学湖南省重点实验室,湖南 长沙 410004)
Author(s):
Jiang GuangbiaoZhong HaiYang JieYin ShuipingXie Jiefei
(1.College of Civil Engineering and Mechanics,Central South University of Forestry and Technology,Changsha 410004,China)(2.Key Laboratory of Engineering Rheology of Hunan Province,Central South University of Forestry and Technology,Changsha 410004,China)
关键词:
FLUENT扩压器紊流并行计算压力恢复效率
Keywords:
FLUENTdiffuserturbulent flowparallel computationpressure recovery efficiency
分类号:
Q242.1
DOI:
10.3969/j.issn.1672-1292.2016.02.008
文献标志码:
A
摘要:
在边界条件和初始条件相同的情况下,分别改变锥形扩压器的扩散角及渐扩管的长宽比,基于FLUENT软件和高性能集群对扩压器内流速的衰减特性及扩压性能进行了数值模拟及分析. 研究结果表明:在渐扩管长宽比一定的情况下,渐扩管效率随着扩散角的增大先增大后减小;在扩散角不变的情况下,渐扩管效率随着渐扩管长宽比增大而增大. 因此,用适当的扩散角或增大渐扩管长宽比的方法可得良好的压力恢复. 关于并行计算,当核数目不变时,随着网格数量的增加,并行效率呈增加趋势但增大的幅度越来越小;当网格数不变时,随着核数目的增加,并行计算效率呈减小的趋势. 本预测结果可为扩压器的优化设计及工程应用提供参考.
Abstract:
At the same situation of boundary and initial conditions,changes are made for diffusion angle of conical diffuser and aspect ratio respectively. Study on the performance of the conical diffuser has been made by using of the simulation based on FLUENT software and cluster. The results show that when aspect ratio is certain,the efficiency of conical diffuser first increases and then decreases with the increase of diffusion angle. When the diffusion angle is certain,the efficiency of diffuser is increasing with the increase of aspect ratio. Thus,good pressure recovery can be obtained with an appropriate spread angle or increase the aspect ratio of the diverging tube method. For parallel computing,when the cores number remains changed,the parallel efficiency is improved with an increase in the number of grids. When the grid number remains the same,parallel computing efficiency shows a trend of decrease with the increase of the number of processor cores. The predicted results can serve as reference of diffuser for optimizing design and engineering applications.

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备注/Memo

备注/Memo:
收稿日期:2015-09-20. 
基金项目:湖南省自然科学基金(14JJ2103)、湖南省重点学科建设项目(2012ZDXK012)、中南林业科技大学人才引进项目(104-0096). 
通讯联系人:钟海,硕士研究生,研究方向:工程流变学. E-mail:feiying1991618@163.com
更新日期/Last Update: 2016-06-30