变螺距诱导轮流场的数值模拟.pdfVIP

2 0 0 7 年 10 月 农 业 机 械 学 报 第 38 卷 第 10 期 变螺距诱导轮流场的数值模拟 孔繁余　吕　毅　黄建军　孙　建 　　【摘要】　在泵叶轮进口前置变螺距诱导轮能有效地提高泵机组的抗汽蚀性能。基于CFD 技术, 采用F luent 软 件对变螺距诱导轮进行几何建模、选定边界条件等, 数值模拟计算其内部流场。结合变螺距诱导轮的实例, 给出了 变螺距诱导轮内部速度与压力的分布情况以及粒子流动迹线图, 得到了其内部流场的主要特征。 关键词: 水泵　诱导轮　变螺距　流场　数值模拟 中图分类号: TH 311 文献标识码: A - Num er ica l Sim ula tion on Flow F ield of Var iable p itch Inducers 1 1 1 2 　 　 　 Kong Fanyu L üY i H uang J ian jun Sun J ian ( 1. 　2. ( ) . , ) J iang su U n iversity H am ilton S und strand Ind ustria l S hang ha i Co L td Abstract A n inducer in stalled befo re the in let of pum p im peller can efficien tly resist the cavitation , how ever, it is lack of research in the flu id field abou t the variab le p itch inducer at p resen t. Based on CFD techn ical and F luen t p rogram , the flu id field abou t variab le p itch inducer w as num erical sim u lated. R elated to the exam p le of the variab le p itch inducer, in it, the distribu tion of velocity and p ressu re w ere taken ou t and the trace of the particle w as p lo t and the m ain characteristics of the in terio r flu id field w ere described. 　 , , , , Key words Pum p Inducer V ariab le p itch F lu id field N um erical sim u lation 　　引言 1　数值模拟 通常在泵进口前置诱导轮是提高低汽蚀余量泵