摘要
在供水、排水管路中，经常遇到不同形状的渐扩管段，在设计这种管路时，首先考虑到它的局部阻力系数的大小。在现有的资料中只考虑到它的扩散角及扩散段两端面积之比，而没有考虑到水的流速，本文进行了全面考虑，在扩散角为５．７０°，面积之比为０．２５的管路上进行了实验，测出了不同流速下的渐扩段阻力系数。
In watersupply and drainage pipelines often is the cose of diffuser pipes with different shapes. When designing this kind of pipes, We nust consider it's local loss coefficient. In some practice, only it's ratio of double-end cross-sections and diffuser angle are considered, but the states of flow are ignored. In this aspeet, this article gives overall consideration and made special experiments at the pipeline with 5·7° diffuser angle and 0.25 cross-se(tior) ratio and measured local loss coefficienf of diffuser in different state of flow, that gives the basis for pipeline designing.
出处
《东北农业大学学报》
CAS
CSCD
1998年第4期367-370,共4页
Journal of Northeast Agricultural University
关键词
排水
管路渐扩段
流速
阻力系数
Diffuser Sfates of flow Local loss coefficient
