|Table of Contents|

Parallel Numerical Simulation and Analysis of the Flow Field ofDiffuser Based on FLUENT Software and Cluster(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2016年02期
Page:
47-
Research Field:
能源与动力工程
Publishing date:

Info

Title:
Parallel Numerical Simulation and Analysis of the Flow Field ofDiffuser Based on FLUENT Software and Cluster
Author(s):
Jiang Guangbiao; Zhong Hai; Yang Jie; Yin Shuiping; Xie 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）
Keywords:
FLUENT; diffuser; turbulent flow; parallel computation; pressure recovery efficiency
PACS:
Q242.1
DOI:
10.3969/j.issn.1672-1292.2016.02.008
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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Last Update: 2016-06-30