ISO 4359:2022
流量测量结构.矩形、梯形和U形水槽
Flow measurement structures — Rectangular, trapezoidal and U-shaped flumes
ISO 4359:2022 发布历史
This document specifies methods for the measurement of flow in rivers and artificial channels under steady or slowly varying flow conditions, using certain types of critical-depth flumes (also known as “standing-wave flumes”). A wide variety of flumes has been developed, but only those critical-depth flumes which have received general acceptance after adequate research and field testing, and which therefore do not require in situ calibration, are considered herein. The flow conditions considered are uniquely dependent on the upstream head, i.e. subcritical flow must exist upstream of the flume, after which the flow accelerates through the contraction and passes through its critical depth (see Figure 1). The water level downstream of the structure is low enough to have no influence upon its performance. This document is applicable to three commonly used types of flumes, covering a wide range of applications, namely rectangular-throated, trapezoidal-throated and U-throated. The hydraulic theory behind this document was presented in Reference [7]. This document is not applicable to a form of flume referred to in the literature (sometimes called a “Venturi” flume) in which the flow remains subcritical throughout. NOTE The Venturi form of flume is based on the same principle as a Venturi meter used within a closed conduit system and relies upon gauging the head at two locations and the application of Bernoulli’s energy formula.
ISO 4359:2022由国际标准化组织 IX-ISO 发布于 2022-12-19。
ISO 4359:2022在国际标准分类中归属于: 17.120.20 明渠中流量的测量。
ISO 4359:2022 发布之时，引用了标准
- ISO 772 水文测验.词汇和符号
ISO 4359:2022的历代版本如下：
- 2022年 ISO 4359:2022 流量测量结构.矩形、梯形和U形水槽
- 2017年 ISO 4359:2013/Amd 1:2017 明渠水流测量.矩形、梯形和U形测流槽.修改件1
- 2013年 ISO 4359:2013 明渠水流测量.矩形、梯形和U形测流槽
- 1999年 ISO 4359:1983/Cor 1:1999 明渠水流测量 矩形、梯形和U形测流槽 技术勘误1
- 1983年 ISO 4359:1983 明渠水流测量 矩形、梯形和U形测流槽
