文献类型：期刊文献

中文题名：几何特征对多孔板特性的影响

英文题名：Effect of General Geometric Characteristics for Multi-hole Orifices' Features

作者：王慧锋[1];凌长玺[1]

机构：[1]华东理工大学信息科学与工程学院,上海200237

年份：2015

卷号：41

期号：5

起止页码：677

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

语种：中文

中文关键词：多孔板;压损系数;流出系数;几何分布;几何参数

外文关键词：multi-hole orifice; pressure loss coefficient; discharge coefficient; geometric arrangement;geometric parameters

摘要：针对多孔板几何描述相对较复杂,导致了设计的复杂性、没有系统的设计方法、也没有探究各参数及分布对多孔板特性影响程度的情况。首先研究了多孔板在环形及矩形分布、有无中心孔这一分布特征,得出在相同几何参数情况下环形分布和有中心孔的多孔板的压损系数较低和流出系数较高且稳定性较好的结论;研究了开孔个数n、等效直径比β和孔板分布密度Dd这3个几何参数对多孔板特性的影响,并结合Matlab图表进行具体数值分析。结果表明:在相同几何分布情况下,开孔个数和孔板分布密度对多孔板特性影响较小,而等效直径比对多孔板特性数影响较大,可作为影响多孔板特性的关键性参数。
The complexity of multi-hole orifices＇ geometric description results in the designing difficulty, fewer systematic design methods, and little research about the geometric parameters＇ influence on the multi-hole orifices~ pressure loss coefficient and discharge coefficient. In this paper, we firstly investigate the effects of circular and rectangle arrangement with or without center hole, and obtain that the multi-hole orifices at the same geometric parameters perform well when the geometric arrangement is fixed as the circular arrangement with center hole. Then, we analyze the influence of the geometric parameters, i. e. , the number of holes, the equivalent diameter ratio, and distribution density. It is shown from Matlab diagram that the equivalent diameter ratio has greater effect on the performance of multi-hole orifice than the number of holes and distribution density. Hence, it is feasible to adopt the equivalent diameter ratio as the dominant parameter affecting the performance of multi hole orifice.