摘要
同心环状空间是工程上较常见到的流体流动空间，在此空间中流体流动情况的分析较复杂。工程上对其流动情况的分析常常是引用流体力学中的分析结果，但往往由于对环状空间结构的条件重视不够，引用时很容易出毛病。经过仔细推导分析，指出其应用条件。
ln engineering,the concentric ring space is an usual flowing space of flu- id . its analysis of flowing condition is very complicated. usually. quoting from the ana- lytical result of Fluid Mechanics . researchers analyze the flowing condition in engineer- ing. But , the quote is often wrong because they don't emphasize enough on the condi- tion in concentric ring structure. The authors point the applying condition after having deduced and analyzed carefully . we hope it helpful to the analysis and calculation of pressure losing which is produced when fluid is flowing through concentric ring space.
关键词
流体
同心环状空间
流动
环形管道
压力损失
concientric ring space pipe , application condition . formula of volumet- ric discharge , calculation for pressure losing
